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1
Tamila, V. A. "Design principes of single-stage rolling mills for machine-building industries." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 63, no. 3 (2018): 297–306. http://dx.doi.org/10.29235/1561-8358-2018-63-3-297-306.
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The use of variable profiles in engineering is the most effective way to reduce metal consumption and improve performance, increase the lifetime, reliability of machines and mechanisms, and reduce costs for their production, repair and operation. The purpose of the present work is to systematize the blanks of machine-building industries obtained by methods of plastic deformation and to develop general principes of the con cept of creating single-stage rolling mills on the basis of analysis of their design and operation. Three main classes of profiles are distinguished, differing in the type of the initial workpiece: strip, shaped and tube periodic billets. All these types of blanks can be used as semi-finished products for the production of the main parts of suspension and chassis of cars. Strip billets are widely used for the manufacturing of elastic suspension elements, tubular – for manufacturing of hollow body parts with increased requirements for strength and rigidity, in particular, driving axle housing, semi-axles of cars and trailers, jet engine casings. Shaped periodic profiles of various shapes are used as blanks for hot volumetric stamping. Mills and automatic lines for the rolling of blanks of low-spring springs, under-springs, guide bearings of air suspension, rolling of the bars of the front axle beam, manufacturing of protective elements and semi-axes of agricultural machinery developed under the guidance or with the direct participation of the author are presented. General requirements for the deformation equipment of machine-building industries are formulated. Recommendations to use induction heating and high-temperature thermomechanical treatment are justified. It is not recommended to change the direction of movement of the workpiece in the process chain. As a power drive equipment it is better to take electromechani cal, rather than hydraulic systems. It is also advisable to choose separate drives for each working element of the equipment.
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Holubek, Radovan, Roman Ruzarovsky, and Karol Velíšek. "The Possibilities of the Communication Methods of iCIM 3000 System and their Main Functions." Applied Mechanics and Materials 421 (September 2013): 585–90. http://dx.doi.org/10.4028/www.scientific.net/amm.421.585.
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Actual trends in manufacturing are characterized by production broadening, innovation cycle shortening, and the products having a new shape, material and functions. The production strategy focused on time needed change from the traditional functional production structure to flexible manufacturing cells and lines. Production by automated manufacturing system (AMS) is one of the most important manufacturing philosophies in the last years. The main goals of the project we are involved in lies on building a laboratory in which will be located a flexible manufacturing system consisting of at least two production machines with NC control (milling machines, lathe). These machines will be linked to a transport system and they will be served by industrial robots. Within this flexible manufacturing system a station for the quality control consisting of a camera system and storage system will be also located. The design, analysis and improvement of this manufacturing system, specially with a special focus on the communication among devices constitute the main aims of this paper. The key determining factors for the manufacturing system design are: the product, the production volume, the used machines, the disposable manpower, the disposable infrastructure and the legislative frame for the specific cases.
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Liu, Sha, Yun Qi Wang, Lei Wei, and De Cheng Wang. "A Design of a Small Self-Propelled Mower by Building the Key Curves Based on the Internal Structure." Advanced Materials Research 591-593 (November 2012): 106–11. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.106.
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Based on the internal structure of a small self-propelled mower, extract key points and make the main outlines of the machine by connecting the points in four ways: straight lines connect, arcs connect, free curves connect and data fitting. Then start from the main outlines and make the morphological evolution by the rules of "tilt", "fillet" and the characteristic of curves to obtain lots of basic shapes of the machines. Choose and modify the shapes by a unified style to get the final design of the mower. The period of the R&D of the small self-propelled mower is shorten and the final design is simple and effective in line with the appearance needs of such kind of products. Moreover the final shells of the mower are better match with the structural components. That verifies the feasibility of the design method and its better effect.
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Buriy, G. G., V. S. Shherbakov, S. B. Skobelev, and V. F. Kovalevskiy. "IMPROVEMENT OF THE HYDRAULIC EXCAVATOR BUCKET DESIGN." Russian Automobile and Highway Industry Journal 16, no. 3 (2019): 202–13. http://dx.doi.org/10.26518/2071-7296-2019-3-202-213.
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Introduction.Construction of engineering structures is impossible without building and road machines. The large volume of financing is allocated for such machines’ purchase. The main ways of reducing costs of the equipment consist in more rational operation of the equipment and also in decrease of equipment’s cost by constructive changes. The paper demonstrates the new design of the single-bucket hydraulic excavator with smaller cost.Materials and methods.The main ways of cost reduction for construction machines are more rational operation and depreciation of a design with the required characteristics’ maintaining. The paper describes constructive changes of the working equipment of the single-bucket hydraulic excavator, which allow decreasing the production costs.Results.The authors describe the new bucket design of the single-bucket hydraulic excavator. Moreover, the authors carry out the analysis of the existing buckets’ design. The paper also illustrates the functioning on bucket forces while digging process. The authors describe the solutions of the problem for productivity increase of the single-bucket in hydraulic excavators. In addition, the authors make the scheme of the bucket loading while digging process. Such scheme helps to reduce resistance forces of digging.Discussion and conclusions.As a result, the paper presents the design of the working equipment of the hydraulic excavator’s single-bucket, which allows reducing resistance forces of digging. Such results would help to establish buckets of bigger capacity and would lead to the productivity increase.
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Liu, Pei, Peng-Yu Lian, and Wei-Guo Yang. "Horizontal Resonance of a 13 Story Building Under External Machine Vibrations." International Journal of Structural Stability and Dynamics 18, no. 01 (2018): 1850005. http://dx.doi.org/10.1142/s0219455418500050.
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Excessive vibrations seriously affected the comfort of residents living on the upper floors of a high-rise shear walled building in Beijing. The ambient vibration tests were conducted to measure the floor acceleration responses, which were found to contain almost periodic signals likely to be excited by vibration sources with frequency of about 1.5[Formula: see text]Hz. The transverse vibration levels of the building above the 8th floor are not acceptable as revealed by the one-third octave spectra and weighted acceleration levels according to the ‘Standard for Allowable Vibration of Building Engineering’ of China. The modal properties of the building are identified by a Bayesian FFT method, indicating that the resonance between the building and the vibration sources caused the excessive vibrations. For comparison, the vibration test of an adjacent building with the same structural design was also conducted, together with modal analysis by the finite element method. It is found that as the story level increases, different trends of amplification in floor root mean square (RMS) acceleration and mode shape component of the two buildings cause different vibration levels. After tests outside the residence community, the main vibration sources were identified to be the working machines in two stone processing factories a few hundred meters away from the building. The vibration tests with measurements in the building and near the vibration sources with different number of machines in the two factories were also conducted. The results show that the vibration levels of the building can be controlled below the acceptance value by reducing the number of machines.
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Saakian, Alexander. "Improving energy efficiency of cold storage." АгроЭкоИнфо 3, no. 45 (2021): 12. http://dx.doi.org/10.51419/20213312.
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Saving resources and energy in refrigeration systems is one of the main vectors of development of the national economy of our country. One of the promising ways to solve these problems is the use of energy efficient refrigeration machines. The article discusses the main issues on the organization of energy efficient storage. In particular, the main recommendations for the design of the storage building are given; an analysis of the energy efficiency of refrigeration machines with and without VFD (variable frequency drive) is given; the main aspects of the operation of the condenser of the refrigeration unit are considered. Keywords: ANNUAL ENERGY CONSUMPTION, REGULATION, ENERGY EFFICIENCY
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Zhao, Jing Hui, and Bing Zhou. "Design of Thermocouple Verification Data Records Table Based on Labview." Applied Mechanics and Materials 511-512 (February 2014): 259–64. http://dx.doi.org/10.4028/www.scientific.net/amm.511-512.259.
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Using YanHua USB-4718 eight-channel thermocouple input module, PC machines as the main hardware,the Labview of National Instruments (NI) company as the software development platform, building thermocouple test data recording sheet, automatic collection standards and the tested thermocouple mill volt values and the related standards. According to thermocouple calibration data processing formulas, will calculate the error of the thermocouple each test point automatically. It will achieve visual user interface, save test data, test certificates and achieve other functions.
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Li, Xinggao, Dajun Yuan, and Qingfei Huang. "Cutterhead and Cutting Tools Configurations in Coarse Grain Soils." Open Construction and Building Technology Journal 11, no. 1 (2017): 182–99. http://dx.doi.org/10.2174/1874836801711010182.
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Background: Many subway/metro tunnels were constructed using close face shield machines in coarse grain soils in last decades. Configurations of the shield cutterhead and cutting tools are critical in terms of cost and project duration. There are currently no recognized methodologies available for the configurations due to the various geological and technical influencing factors. Several aspects have been considered in many single case studies. Objective and Method: To aid a better understanding for the involved design and operational aspects in a system way, main physical and mechanical characteristics of the coarse grain soils encountered in China are briefly summarized; advantages and disadvantages of the spoke type and plate type cutterhead equipped with corresponding cutting tools are outlined; performances of the different shield cutterheads used in the typical subway construction cases are introduced. Results: Based on the jobsite experiences, discussed are the options with respect to design of the cutterhead and cutting tools in the coarse grain soils, including opening ratio of the cutterhead, configuration of the cutting tools, use of the single disc cutters with inserts, reasonable movement of shield machine, robust shield machines against wears and interventions for changing tools. Conclusion: According to the discussions, the rule-of-thumb suggestions are presented to provide references for later similar projects.
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Dai, Kaiyu, Fangwei Xie, Qingsong Gao, Desheng Zhang, Erming Ding, and Xinjian Guo. "Theoretical and experimental research on the pressure response characteristics of cartridge electromagnetic relief valve." International Journal of Structural Integrity 9, no. 1 (2018): 65–75. http://dx.doi.org/10.1108/ijsi-03-2017-0020.
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Purpose The purpose of this paper is to study the pressure response characteristics of the cartridge electromagnetic relief valve, which offers the problems caused by low pressure response and low efficiency in hydraulic plate shearing machines. Design/methodology/approach First of all the mathematical model of the cartridge electromagnetic relief valve is deduced to analyze the influence of the relevant parameters on the system pressure response. Then experiments are conducted to research the dynamic characteristics on building and relieving pressure. Through comparison of theoretical and experimental research, the results are found. Findings The results show that the input flow, working pressure, diameter of adjacent damping hole, and spring stiffness of the main valve have great influence on building pressure of the system, and have no influence on relieving pressure, while diameter of damping hole of control cover plate has influence on the building and relieving pressure of the system. Originality/value The research results provide powerful theoretical support for the parametric design of the cartridge electromagnetic relief valve in the hydraulic system of plate shearing machine.
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Cristianini, Nello, and Teresa Scantamburlo. "On social machines for algorithmic regulation." AI & SOCIETY 35, no. 3 (2019): 645–62. http://dx.doi.org/10.1007/s00146-019-00917-8.
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Abstract Autonomous mechanisms have been proposed to regulate certain aspects of society and are already being used to regulate business organisations. We take seriously recent proposals for algorithmic regulation of society, and we identify the existing technologies that can be used to implement them, most of them originally introduced in business contexts. We build on the notion of ‘social machine’ and we connect it to various ongoing trends and ideas, including crowdsourced task-work, social compiler, mechanism design, reputation management systems, and social scoring. After showing how all the building blocks of algorithmic regulation are already well in place, we discuss the possible implications for human autonomy and social order. The main contribution of this paper is to identify convergent social and technical trends that are leading towards social regulation by algorithms, and to discuss the possible social, political, and ethical consequences of taking this path.
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Maccioni, Lorenzo, Marco Bietresato, and Yuri Borgianni. "From the Extraction of Currently Fulfilled Requirements to Value Curves: A Case Study in the Field of Harvesting Machines for Shell Fruits and Lessons Learnt in Engineering Design." Applied Sciences 10, no. 11 (2020): 3809. http://dx.doi.org/10.3390/app10113809.
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The market for agricultural machinery is characterized by products with a high degree of maturity in the product life cycle. Consequently, current improvements in new machinery are predominantly incremental and new projects basically use solutions that are already consolidated. This makes this domain appropriate for benchmarking existing systems and envisioning new value propositions. The present paper deals primarily with the former and uses the value curves as a means to structure the comparison among different families of technical systems; in particular, harvesting machines for shell fruits from the ground surface, e.g., chestnuts, walnuts, and hazelnuts, were investigated here. The process of building value curves requires the identification of currently fulfilled requirements. Despite the attention paid by engineering design research to requirements, a structured process is lacking to extract relevant information and create value curves or other representations useful for benchmarking. The present paper approaches this problem and presents how the authors have individuated relevant knowledge for characterizing different categories of harvesting machines. Namely, after an extensive search of the scientific literature and patents, a critical review of existing machines, aimed at individuating their functioning principles, architecture, and attitude in fulfilling specific design requirements, was performed. Then, existing machines were classified in 8 main categories, and their strengths and weaknesses were identified with reference to 11 competing factors. The consequent construction of value curves enabled the identification of possible points of intervention by hypothesizing possible future evolutions of such machinery, both in a structural and in a value-based perspective. Limitations about the repeatability of the followed approach and possible repercussions on design research are discussed.
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Krivoshapko, Sergey N. "Optimal shells of revolution and main optimizations." Structural Mechanics of Engineering Constructions and Buildings 15, no. 3 (2019): 201–9. http://dx.doi.org/10.22363/1815-5235-2019-15-3-201-209.
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Introduction. Optimization is a criterion, on the ground of which, comparative estimation of possible alternatives and selection of the best decisions is carried out. Cost of a shell, its minimum weight, absence of bending moments and tensile normal stresses, given stress state for acting external load, given bearing capacity when optimal shallowness, maximum external load, minimum weight under limitation on the value of natural frequencies of vibration and maximum displacements, absence of bending moments with taking into account internal pressure, dead weight, and centrifugal forces; maximum of critical force and something else can be criterion of selection of optimal shape of shell of revolution. Methods. The main criteria of optimality for shells of revolution and information sources for the 1970-2019 periods are presented in a paper. It will help to study previous results devoted to using optimizations and to set about further investigation. But there is no single approach to the definition of optimal shell of revolution and obviously will not be, because own optimizations are necessary for every concrete case of loading, or distribution of stresses along the thickness, or under the demands to the ratio of the volume and area of considered shell, or with due regard for different kind of expenses, and other demands. Results. For the first time, 24 criteria of optimality only for shells of revolution were discovered. The names of scientists offered presented criteria of optimality and the 45 references dealing with this question are pointed out. It is shown that principles put in the basis of optimal design and criteria of optimality must be given with the help of language quite naturally for computer. Having used optimi- For citation Krivoshapko S.N. (2019). Optimal shells of revolution and main optimizations. Structural Mechanics of Engineering Constructions and Buildings, 15 (3), 201-209. http://dx.doi.org/ 10.22363/1815-5235-2019-15-3-201-209 zations presented in the paper, designers can choose the criterion for their own design of optimal shell shape. Study of the prerequisites of the structural solutions in building and machine-building, the history of the development and perfecting of technologies of erection of shells of revolution will permit to generalize the experience accumulated by designers and to develop new fundamental solutions. Otherwise, architects, structural engineers, and designers will be repeating the achieved solutions in building, architecture, and machine-building.
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Meng, Zhao Ming, Ya Bo Qiao, and C. Ren. "Optimal Design for Roller Motion Track of Tire Building Machine." Advanced Materials Research 221 (March 2011): 478–83. http://dx.doi.org/10.4028/www.scientific.net/amr.221.478.
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at present, the product quality that tire building machine presses tire is not ideal. The phenomenon that the tread isn’t pressed solidly often appears. Through analysis, the main reasons of this problem are those the actual rolling curve doesn’t accord with ideal curve enough, and roller pressure is unstable, pressure fluctuations are large. Therefore, ensuring the basic structure of institution is unchanged, this paper adopts optimization technique to calculate the size of planar linkage institutions and determine the best design result. It makes the moving point from the planar linkage institutions accord with tire section curve best. The article cites example of the engineering design, demonstrating the superiority of the new design method fully.
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Yuan, Li Juan, and Cong Lin Meng. "Design Principle of Interior Air Environment Based on Passive Ventilation Idea." Applied Mechanics and Materials 357-360 (August 2013): 525–27. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.525.
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Wind energy is one of the most important energies on Earth. It can be used in many ways, such as wind power generation and interior air ventilation promotion, while the latter is the main way of using wind energy for green building. Under the full range guidance of passive design concept, it uses idea that advection leads heat to flow through building naturally, and control the heat flowing direction by building performance, to achieve a cooling effect without any special machinery and equipment.
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Beurier, Erwan, Dominique Pastor, and David I. Spivak. "Memoryless Systems Generate the Class of all Discrete Systems." International Journal of Mathematics and Mathematical Sciences 2019 (October 10, 2019): 1–10. http://dx.doi.org/10.1155/2019/6803526.
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Automata are machines, which receive inputs, accordingly update their internal state, and produce output, and are a common abstraction for the basic building blocks used in engineering and science to describe and design complex systems. These arbitrarily simple machines can be wired together—so that the output of one is passed to another as its input—to form more complex machines. Indeed, both modern computers and biological systems can be described in this way, as assemblies of transistors or assemblies of simple cells. The complexity is in the network, i.e., the connection patterns between simple machines. The main result of this paper is to show that the range of simplicity for parts as compared to the complexity for wholes is in some sense complete: the most complex automaton can be obtained by wiring together direct-output memoryless components. The model we use—discrete-time automata sending each other messages from a fixed set of possibilities—is certainly more appropriate for computer systems than for biological systems. However, the result leads one to wonder what might be the simplest sort of machines, broadly construed, that can be assembled to produce the behaviour found in biological systems, including the brain.
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Rohozin, Ivan, Oleksiy Vasyliev, and Anna Pavelieva. "Determination of Building Mortar Mixers Effectiveness." International Journal of Engineering & Technology 7, no. 3.2 (2018): 360. http://dx.doi.org/10.14419/ijet.v7i3.2.14553.
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The peculiarities of building mortar mixes preparation in cyclic compulsory mixers of various designs have been considered in this article. The work of mixers with a horizontal shaft, a vertical shaft, beaters, screw straps, as well as planetary motion of mixing stars with beaters have been described in detail. The main attention here is paid to the constructive performance of machinery. A relative assessment is given to the manual bearing groups. The multi-purpose system of numerical indices necessary for the performance assessment of mixers’ running efficiency is proposed and defined in this paper. The design of the mixers is considered in this research according to the number of components of the mixture particles motion, which arise from the constrained influence of the movable operating element. The indicators of net weight and area in the plan are attributed to the productivity. The general method of determining the coefficient for assessing the impact, exerted by the design of the mixers on their running efficiency, has also been developed by the authors of this scientific investigation. The obtained data will enable to investigate and improve the design of the mixers, finding the ways to increase their working efficiency.
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Imrie, Rob. "The Interrelationships between Building Regulations and Architects' Practices." Environment and Planning B: Planning and Design 34, no. 5 (2007): 925–43. http://dx.doi.org/10.1068/b33024.
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It is commonly assumed that building regulation and control is a technical activity and part of a bureaucratic machine external to the design process. For many architects building regulations are no more than a set of rules to be adhered to, and are usually seen as ephemeral, even incidental, to the creative process of design. However, the main argument of this paper suggests that the building regulations are entwined with, and are constitutive of, architects' practices. Far from being an insignificant part of the design process, as some commentators suggest, I develop the argument that the building regulations influence aspects of creative practice and process in architecture and, as such, ought to be given greater attention by scholars of urban design.
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Yassine, Mohammed Benyoucef. "Contemporary Architecture Design of Clay Material-Ecological Alternatives for Individual Houses in the Sahara Desert." Materials Science Forum 1005 (August 2020): 57–64. http://dx.doi.org/10.4028/www.scientific.net/msf.1005.57.
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This work focuses on the new alternatives and technological solutions of clay architecture design for contemporary individual houses in the Sahara Desert. Clay considered as a natural and eco-friendly building material, moreover is now back in the new project because of his ecological and aesthetic benefits that attract the attention of increasing numbers of architects. Current researches efforts focused on increasing its resistance in order to make it competitive and contemporary material. The main aim of this study is to share and disseminate technological and technical solutions besides the new possible alternatives to the architectural design of contemporary individual houses by using clay material. The research methodology went through different phases that range from analyzing the historical experience of clay construction in the Sahara Desert and investigation of the new ecological and technological alternatives. The clay is a lower-impact building material in terms of energy performance, recycle, resources consumption, low-cost, sustainability, and all these factors make the clay material as favourable and excellent natural and contemporary material. The use of clay material with new techniques and machines technologies is an environmental and economic alternative for contemporary individual houses in the Sahara Desert.
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Mulero-Palencia, Sofía, Sonia Álvarez-Díaz, and Manuel Andrés-Chicote. "Machine Learning for the Improvement of Deep Renovation Building Projects Using As-Built BIM Models." Sustainability 13, no. 12 (2021): 6576. http://dx.doi.org/10.3390/su13126576.
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In recent years, new technologies, such as Artificial Intelligence, are emerging to improve decision making based on learning. Their use applied to the Architectural, Engineering and Construction (AEC) sector, together with the increased use of Building Information Modeling (BIM) methodology in all phases of a building’s life cycle, is opening up a wide range of opportunities in the sector. At the same time, the need to reduce CO2 emissions in cities is focusing on the energy renovation of existing buildings, thus tackling one of the main causes of these emissions. This paper shows the potentials, constraints and viable solutions of the use of Machine Learning/Artificial Intelligence approaches at the design stage of deep renovation building projects using As-Built BIM models as input to improve the decision-making process towards the uptake of energy efficiency measures. First, existing databases on buildings pathologies have been studied. Second, a Machine Learning based algorithm has been designed as a prototype diagnosis tool. It determines the critical areas to be solved through deep renovation projects by analysing BIM data according to the Industry Foundation Classes (IFC4) standard and proposing the most convenient renovation alternative (based on a catalogue of Energy Conservation Measures). Finally, the proposed diagnosis tool has been applied to a reference test building for different locations. The comparison shows how significant differences appear in the results depending on the situation of the building and the regulatory requirements to which it must be subjected.
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Erlita, Anastasia, Mawardi Amin, and Bambang Purwoko Kusumo Bintoro. "Risk Management of Time Overrun in Multiple Phases of Construction: Consultant Perspective." International Journal of Research and Review 8, no. 7 (2021): 311–19. http://dx.doi.org/10.52403/ijrr.20210743.
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This article reports a study on the construction of a food factory building in Indonesia by investigating the root causes of time overruns from the perspective of a consultant. Although many risks have been identified at various stages of the construction project, it is not clear which risk is the main cause of project delays. To better understand the optimization of risk management and risk mitigation, a multi-stage risk management is proposed, which is divided into four phases: pre-design, design, project bidding, and construction. Therefore, the use of bow tie analysis allows for more in-depth inspections to identify risks. From each bow tie diagram, a detailed risk mitigation table can be developed, and it is easier to plan the response to each risk. From this research, the top 5 reasons for the delay of the project were found. The first reason for the delay is X3a2, which has a value of 4.578, which is a change in design idea. The second value of X3c1 is 4.533, which is the technical data of new machines appearing. The third row is X2b4, the value is 4.467, waiting for owner's decision. The fourth place is the variable X1b3 Machine technical data appears after tender, with a value of 4.422, and the fifth place is the difference between local regulations and foreign regulations, with a value of 4.378. Keywords: factory building, risk management, time overrun.
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Lefik, Marcin, Krzysztof Komeza, Ewa Napieralska-Juszczak, Daniel Roger, and Piotr Andrzej Napieralski. "Comparison of the reluctance laminated and solid rotor synchronous machine operating at high temperatures." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 4 (2019): 1111–19. http://dx.doi.org/10.1108/compel-10-2018-0405.
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Purpose The purpose of this paper is to present a comparison between reluctance synchronous machine-enabling work at high internal temperature (HT° machine) with laminated and solid rotor. Design/methodology/approach To obtain heat sources for the thermal model, calculations of the electromagnetic field were made using the Opera 3D program including effect of rotation and the resulting eddy current losses. To analyse the thermal phenomenon, the 3D coupled thermal-fluid (CFD) model is used. Findings The presented results show clearly that laminated construction is much better from a point of view of efficiency and temperature. However, solid construction can be interesting for high speed machines due to their mechanical robustness. Research limitations/implications The main problem, despite the use of parallel calculations, is the long calculation time. Practical implications The obtained simulation and experimental results show the possibility of building a machine operating at a much higher ambient temperature than it was previously produced for example in the vicinity of the aircraft turbines. Originality/value The paper presents the application of fully three-dimensional coupled electromagnetic and thermal analysis of new machine constructions designed for elevated temperature.
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Macnar, Kazimierz, Andrzej Gonet, and Stanisław Stryczek. "Wybrane zagadnienia geotechniczne posadowienia urządzeń wiertniczych." Nafta-Gaz 77, no. 5 (2021): 313–22. http://dx.doi.org/10.18668/ng.2021.05.04.
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This article presents selected geotechnical issues occurring at the foundation of drilling rigs for geological works included in the Operation Plan of a company performing geological works, in the aspect of designing and construction of their foundations and a yard. In the construction of drilling equipment, at least two main zones can be distinguished, often requiring separate foundations for individual machines: the zone near the borehole, including crane components, mast and drill pipe drive, and the so-called machine hall zone, including drive units and elements of mud system. The machine foundation is designed to mount a particular type of machine on it in order to transfer to the ground the static and dynamic loads generated during the movement of the machine. In particular, the current legislation, technical literature and standards were reviewed, especially: API recommended practice 51R and 4G, Working platforms for tracked plant, Eurocode 7 PN-EN 1997-2:2009 Standard. The values of safe bearing capacity of some soils and the magnitude of pressures generated by static and dynamic loads of selected drilling equipment were presented, which can be useful for preliminary assessment of the location of drilling equipment in the field and selection of surface and type of foundations. Typical examples of foundation of drilling rigs in various geotechnical conditions on direct foundations with the use of prefabricated elements such as reinforced concrete road slabs, wooden slabs and composite slabs based on HDPE plastic or on indirect ones with the use of micropiles were described. The following essential elements of the process of geotechnical design of the foundation of drilling rigs and their execution were indicated. According to legal regulations, the form of presentation of geotechnical foundation conditions and the scope of necessary tests should depend on assigning the building structure to a proper geotechnical category, which for practical purposes is tabulated in this article. The design and construction of foundations for drilling rigs should ensure, among other things, that their intrinsic vibrations are sufficiently different from those induced by subassemblies of the rig, that the vibration amplitudes are smaller than permissible, and that the foundations of individual machines are adequately separated from each other and from the rest of the facilities (yard). Conclusions on the safe foundation of drilling rigs on the ground, including, among others, the strengthening of the ground, design of independent building structures such as foundations for drilling rigs and their execution and removal were presented.
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Vilutiene, Tatjana, Gvidas Kumetaitis, Arvydas Kiaulakis, and Darius Kalibatas. "Assessing the Sustainability of Alternative Structural Solutions of a Building: A Case Study." Buildings 10, no. 2 (2020): 36. http://dx.doi.org/10.3390/buildings10020036.
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The implementation of sustainable solutions in the design of buildings is one of the main elements in achieving the transition to sustainability. The variety of structural elements and availability of sustainable materials, and the different preferences of clients, architects, and structural designers make the decision-making process difficult. This research aims to develop a decision model for applying to the early design stage. This work evaluates the sustainability of the load-bearing structures of a commercial building. Three types of load-bearing structures have been selected and compared concerning different physical parameters, cost of construction, cost of materials, technological dimensions (duration expressed in person-hours and machine-hours), and environmental impact. The methodology combines the building information modeling, sustainability criteria, and multi-criteria decision-aiding methods. The presented case study illustrates the proposed approach. The study revealed that multi-criteria decision aiding methods give the possibility to improve the selection process and to assess the sustainability of alternative structural solutions at an early stage of building design. The proposed decision model is versatile and therefore can be applied for different cases.
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Márton, László, Ferenc Szigeti, and Gergely Dezső. "Design of a Fabric Winding Up Unit." Műszaki Tudományos Közlemények 13, no. 1 (2020): 126–32. http://dx.doi.org/10.33894/mtk-2020.13.23.
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Abstract For air-spring production the fabric winding is what prepares the semi-finished materials. The rubber body, that we called the membrane is made from using several layers of fabric and rubber. Building together these layers defines the mechanical properties. During the winding up, we prepare the cut rubber or fabric layers in rolls. Quality of rolling and the performance to make the semi-finished material, depend on the machine which is used for the winding. To satisfy the higher production capacity it was necessary to create a modern construction using automated systems. To assure the ergonomic expectations was a main viewpoint too. My thesis main goal is to explain, in detail, my design and to prove the device structural solutions using finite element analysis.
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Афанасьев, Александр, Afanasyev Afanasyev, Сергей Бригаднов, and Sergey Brigadnov. "AUTOMATION OF STRUCTURAL AND PARAMETRIC ANALYSIS OF PROJECT DECISIONS AND TRAINING OF THE DESIGNER OF MACHINE-BUILDING PRODUCTS WITH CAD COMPASS." Automation and modeling in design and management of 2018, no. 2 (2019): 26–33. http://dx.doi.org/10.30987/article_5c387d61c4ead8.61787791.
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The actual task in the field of computer-aided design of machine-building objects is to increase the level of automation of structural-parametric analysis of design solutions due to the repetition of their use, reducing the number of design operations and ensuring the corresponding competencies of designers. Developed methods and algorithms should ensure the acquisition of the necessary competencies for the designer for successful project activities in the field of computer-aided design, increasing the effectiveness of training. The system of analysis of design solutions should improve the quality of design solutions implemented in CAD KOMPAS-3D.
 In this paper, an overview of methods, systems and tools for analyzing design solutions implemented in the CAD-3D environment. The main features of such systems are described, their main disadvantages are identified: the lack of functions for determining non-optimal sequences of design operations, the inability to automatically rebuild a three-dimensional model of a machine-building product on the basis of analysis of the design model tree. A complex system for the analysis of project solutions and the training of a designer was developed and implemented, based on methods, models and algorithms for analysis and adaptive learning. The results of a computational experiment are presented, on the basis of which it can be concluded that the use of developed software enhances the efficiency and quality of the designer's training in the processes of constructing three-dimensional solid-state machine-building products in CAD KOMPAS-3D.
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Dyrda, Vitalii, Anatolii Kobets, Ievgeniia Bulat, et al. "Vibroseismic protection of heavy mining machines, buildings and structures." E3S Web of Conferences 109 (2019): 00022. http://dx.doi.org/10.1051/e3sconf/201910900022.
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In the article, the authors analyze main issues of protecting buildings and structures against vibroseismic effects with the help of system of elastomeric blocks, which are characterized by high vertical stiffness, low shear stiffness, high energy dissipation and ability to center vertical load; besides, they feature high reliability with no risk of sudden failure. Results of static and dynamic tests of parametric series of elastomeric blocks used for protection of residential buildings against vibrations are presented. Design of pile with anti-vibration rubber supports is described. Calculation of elastomeric blocks under static compression is presented. Components of the stress-strain state of the thin-layer elements were investigated, and rate of the thin rubber layer compression under the action of vertically applied force was calculated. In numerical calculation, weak compressibility of rubber was simulated by moment force of the finite element for weakly compressible materials, which assumes triple approximation of displacement fields, deformation components, and volume change function. The numerical solution was obtained by the finite element method for different radius-thickness ratios in case of geometrically nonlinear elastic and viscoelastic deformation.
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Bulavin, V. F., V. V. Yakhrichev, and A. S. Stepanov. "Policy of Digital Technologies in Small Machine-Building Enterprises." Proceedings of Higher Educational Institutions. Маchine Building, no. 9 (714) (September 2019): 35–45. http://dx.doi.org/10.18698/0536-1044-2019-9-35-45.
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Using high-technology digital platforms in the operation of machine-building enterprises involves active implementation of CAD products. The presence of digital display associated with the PLM systems, signifies the transition to a new type of production. Under these conditions, a 3D model of a part acts as a means of navigating the technological process. Using small machine-building enterprises as an example, the experience of 3D design on the platforms of domestic CAD systems is presented in this work. Automation in the production process acts as the integration of the main stages — design, technological and engineering analysis — into a single information stream. The PLM platform integrates CAD software modules into a common information space using uniform rules, forming technical documentation containing 3D models and 2D drawings, and supporting attributes on project components. It also forms the basis of teamwork. A package of the documents serves as the goal of the pre-production cycle, the condition for the modification of products and a means of combining all the links of the chain from the customer to the consumer into a single information space.
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Papulov, Vladimir. "BUILDING A THREE-DIMENSIONAL MODEL OF AXIAL JET IN SOLIDWORKS." Interexpo GEO-Siberia 7 (2019): 76–79. http://dx.doi.org/10.33764/2618-981x-2019-7-76-79.
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The article provides a brief description of the construction of the main parts of the three-dimensional model of the axial water jet, followed by their Assembly into the finished product. The role of computer simulation in the design of complex types of propellers, which include water jet, is shown. The possibility of solving problems of hydrodynamics with the help of "SolidWorks"is demonstrated. The design of the water jet pipe, taking into account the absence of cavitation. The urgency of application of three-dimensional modeling in the field of shipbuilding, using CAD-programs of machine-building orientation is shown.
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Pešić, Saša, Milenko Tošić, Ognjen Iković, Miloš Radovanović, Mirjana Ivanović, and Dragan Bošković. "BLEMAT: Data Analytics and Machine Learning for Smart Building Occupancy Detection and Prediction." International Journal on Artificial Intelligence Tools 28, no. 06 (2019): 1960005. http://dx.doi.org/10.1142/s0218213019600054.
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Running costs of buildings represent a significant outlay for all businesses, thus finding a way to run facilities as efficiently as possible is vital. IoT-enabled Building Management Systems provide means for process and resource usage automation leading to overall efficiency improvements. Inferring spatial and temporal occupancy in all its forms (binary, numerical or continuous) is one of the key contextual inputs required for smart building management systems. In this work, we showcase design, implementation and experimental validation of a smart building occupancy detection and forecasting solution. The presented solution comprises three main building blocks: (1) A fog computing indoor positioning system (BLEMAT — Bluetooth Low Energy Microlocation Asset Tracking) which, combined with wireless access network monitoring processes, produces indoor location information in a semi-unsupervised manner; (2) Data analysis and pattern searching pipelines responsible for fusing data coming from different smart building and networking systems and deriving information on temporal and spatial occupancy patterns; (3) Long short-term memory (LSTM) neural networks trained to predict occupancy patterns in different areas of a smart building. Data analysis and neural network training are conducted on real-world smart building dataset which authors provide in public online repository. Experimental validation confirms that the proposed solution can provide actionable occupancy detection and prediction information, required by smart building management systems.
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Hein, Maria, Darren Anthony Jones, and Claudia Margot Eckert. "UNDERSTANDING THE EMBEDDED CARBON CHALLENGES OF BUILDING SERVICE SYSTEMS." Proceedings of the Design Society 1 (July 27, 2021): 3279–88. http://dx.doi.org/10.1017/pds.2021.589.
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AbstractEnergy consumed in buildings is a main contributor to CO2 emissions, there is therefore a need to improve the energy performance of buildings, particularly commercial buildings whereby building service systems are often substantially over-designed due to the application of excess margins during the design process.The cooling system of an NHS Hospital was studied and modelled in order to identify if the system was overdesigned, and to quantify the oversizing impact on the system operational and embodied carbon footprints. Looking at the operational energy use and environmental performance of the current system as well as an alternative optimised system through appropriate modelling and calculation, the case study results indicate significant environmental impacts are caused by the oversizing of cooling system.The study also established that it is currently more difficult to obtain an estimate of the embodied carbon footprint of building service systems. It is therefore the responsibility of the machine builders to provide information and data relating to the embodied carbon of their products, which in the longer term, this is likely to become a standard industry requirement.
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Krukhmalev, E. V., and V. V. Panchuk. "Implementation of computer-aided design systems (CAD) in a machine-building enterprise: limitations and opportunities." Quality. Innovation. Education, no. 4 (2020): 53–60. http://dx.doi.org/10.31145/1999-513x-2020-4-53-60.
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The article highlights issues related to factors that affect the introduction of computer-aided design (CAD) systems in modern machine-building industries. The purpose of the work is to determine the main limitations and possibilities of using CAD in production and to consider the main trends in the development of system solutions for mechanical engineering problems. The theoretical basis of the work is data analysis and analytical study of the current state of proposals for CAD solutions. Electronic modeling systems allow not only to optimize the production process, reduce costs, but also are indispensable requirements for the competitiveness of modern engineering products on the world market. They allow you to carry out operational, remote interaction on the development and production of products, bringing it to the international market. Despite the variety of possibilities offered by CAD solutions from various companies and vendors, the request for its implementation by enterprises is very limited. The crisis state of the economy and industrial production is also not an incentive to implement such solutions. In this regard, it is necessary, on the one hand, to study in detail the evaluation of the effectiveness of implementing CAD technologies, and on the other hand - the most flexible software products that are adapted to the real capabilities and requirements of a particular enterprise, production process, and final product.
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Kagan, Pavel. "Management, mechanization and automation of work in the construction of high-rise buildings." MATEC Web of Conferences 170 (2018): 01071. http://dx.doi.org/10.1051/matecconf/201817001071.
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The construction of high-rise buildings consists of the implementation of known technological processes for the installation of building structures: foundations, walls, columns, etc. However, the features of these structures and the high-altitude factor on which the work is done predetermine a number of differences in the technology of production of works, which are manifested in the appearance of new or other accentuation of mechanization means, types of work, technological documentation. The most obvious differences of high-rise construction from the positions of the used machines, mechanisms and devices appear in the means for transporting goods and ensuring the safety of work at altitude. On the basis of the analysis of scientific and practical works in the field of design and construction of high-rise objects, the features of the organization and technology of production at these facilities have been determined. The main design solutions of high-rise facilities that affect the technological features of high-rise buildings are revealed. Features of managing the construction of unique high-rise objects are given. The general technological sequence of the investment and construction process for the construction of high-rise buildings has been determined. Specific features of mechanization and production technology for the construction of high-rise buildings in relation to certain types of construction and erection works are worked out (excavation, production of works of the zero cycle, concreting of the foundation slab, installation and finishing works at height, construction of the above-ground part and others).
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Mokritskiy, B. Y., and E. S. Sitamov. "Tool Materials for Turning Machine-Building Stainless Steel 09Kh17N7Yu." Proceedings of Higher Educational Institutions. Маchine Building, no. 1 (730) (January 2021): 27–33. http://dx.doi.org/10.18698/0536-1044-2021-1-27-33.
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Hard-to-process specialized stainless steel grade 09Kh17N7Yu has become widely used in various fields of mechanical engineering due to its unique performance properties. The existing recommendations for its processing are outdated and do not meet modern requirements for the performance of metal-cutting tools. This necessitated the need to develop recommendations for modern high-performance machine tools. The paper presents methods of solving this problem based on the example of turning by typical domestic replaceable hard-alloyed cutting plates. Relationships between the tool wear and the operating time were obtained. Design solutions for tool materials to be used under specified operating conditions were developed. A significant outcome of the paper was the use of simulation modeling in the Deform software environment, which allowed the authors to develop new coatings for the hard alloy VK8, which provided a significant (up to 3 times) increase in tool life. Using modelling, it was also possible to design new tool materials for new or expected operating conditions. The following main criteria sufficient for modeling were identified: tool wear, temperature in the cutting zone, stresses in the tool material and deformation of the tool material. The results obtained can be used as the basis for the so-called data bank, which can be used in production enterprises.
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Tsyrkov, Alexander V., Pavel M. Kuznetsov, George A. Tsyrkov, Yegor A. Yermokhin, and Valery K. Moskvin. "Project and Operations Management of Machine-Building Production." Mordovia University Bulletin, no. 4 (December 28, 2018): 511–22. http://dx.doi.org/10.15507/0236-2910.028.201804.511-522.
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Introduction. The aim of this work is to develop the main guidelines of project and operations management at machine-building enterprises. Materials and Methods. The authors reviewed the state of application of the project and operations management of machine-building production in the automated mode. The review showed the complexity of its application due to a large number of factors, which must be taken into account when implementing. An approach was developed that allows solving the task using the automation of analysis processes and decision-making in production management. Results. The article establishes the main guidelines of the project and operations management, aimed at increasing productivity and reducing production costs based on modeling the state of production environment. It also defines the requirements for the model. A prognostic time model for forecasting the state of the enterprise production system has been developed. Conclusions.The tasks have been solved in this article allow increasing the level of automation of the processes of project and operations management of the enterprise in the conditions of quick-change production. The implementation of the developed approach to project and operations management of the enterprise will allow streamlining the launch of products with a reduction in the amount of work in progress and increasing the productivity of output. Keywords: technological process, project and operations management, design, prognostic model, production, labor intensity, productivity For citation: Tsyrkov A. V., Kuznetsov P. M., Tsyrkov G. A., Yermokhin Ye. A., Moskvin V. K. Project and Operations Management of Machine-Building Production. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2018; 28(4):511–522. DOI: https://doi.org/10.15507/0236-2910.028.201804.511-522
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Nebot, Àngela, and Francisco Mugica. "Energy Performance Forecasting of Residential Buildings Using Fuzzy Approaches." Applied Sciences 10, no. 2 (2020): 720. http://dx.doi.org/10.3390/app10020720.
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The energy consumption used for domestic purposes in Europe is, to a considerable extent, due to heating and cooling. This energy is produced mostly by burning fossil fuels, which has a high negative environmental impact. The characteristics of a building are an important factor to determine the necessities of heating and cooling loads. Therefore, the study of the relevant characteristics of the buildings, regarding the heating and cooling needed to maintain comfortable indoor air conditions, could be very useful in order to design and construct energy-efficient buildings. In previous studies, different machine-learning approaches have been used to predict heating and cooling loads from the set of variables: relative compactness, surface area, wall area, roof area, overall height, orientation, glazing area and glazing area distribution. However, none of these methods are based on fuzzy logic. In this research, we study two fuzzy logic approaches, i.e., fuzzy inductive reasoning (FIR) and adaptive neuro fuzzy inference system (ANFIS), to deal with the same problem. Fuzzy approaches obtain very good results, outperforming all the methods described in previous studies except one. In this work, we also study the feature selection process of FIR methodology as a pre-processing tool to select the more relevant variables before the use of any predictive modelling methodology. It is proven that FIR feature selection provides interesting insights into the main building variables causally related to heating and cooling loads. This allows better decision making and design strategies, since accurate cooling and heating load estimations and correct identification of parameters that affect building energy demands are of high importance to optimize building designs and equipment specifications.
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Martínez-Comesaña, Miguel, Lara Febrero-Garrido, Enrique Granada-Álvarez, Javier Martínez-Torres, and Sandra Martínez-Mariño. "Heat Loss Coefficient Estimation Applied to Existing Buildings through Machine Learning Models." Applied Sciences 10, no. 24 (2020): 8968. http://dx.doi.org/10.3390/app10248968.
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The Heat Loss Coefficient (HLC) characterizes the envelope efficiency of a building under in-use conditions, and it represents one of the main causes of the performance gap between the building design and its real operation. Accurate estimations of the HLC contribute to optimizing the energy consumption of a building. In this context, the application of black-box models in building energy analysis has been consolidated in recent years. The aim of this paper is to estimate the HLC of an existing building through the prediction of building thermal demands using a methodology based on Machine Learning (ML) models. Specifically, three different ML methods are applied to a public library in the northwest of Spain and compared; eXtreme Gradient Boosting (XGBoost), Support Vector Regression (SVR) and Multi-Layer Perceptron (MLP) neural network. Furthermore, the accuracy of the results is measured, on the one hand, using both CV(RMSE) and Normalized Mean Biased Error (NMBE), as advised by AHSRAE, for thermal demand predictions and, on the other, an absolute error for HLC estimations. The main novelty of this paper lies in the estimation of the HLC of a building considering thermal demand predictions reducing the requirement for monitoring. The results show that the most accurate model is capable of estimating the HLC of the building with an absolute error between 4 and 6%.
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Zhou, Haichao, Guolin Wang, and Yuming Wang. "Wide-Base Tire-Building Process and Design Optimization Using Finite Element Analysis." Tire Science and Technology 46, no. 4 (2018): 242–59. http://dx.doi.org/10.2346/tire.18.460405.
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ABSTRACT The wide-base tire is a relatively new design that originated to replace dual tires because of its potential for improved performance. However, during the construction process, the wide-base tire is more likely to experience tread deformation and uneven stress distribution. The goal of this study is to incorporate numeric techniques for the construction and design optimization of a wide-base, heavy vehicle, pneumatic tire. First, four conditions of the tire (385/55R22.5)–building process, including gluing of components on the main drum, gluing of components on the auxiliary drum, green tire, and finalizing the capsule vulcanizing machine, were simulated using finite element analysis. Second, to solve the difference in the tire's (435/50R19.5) material distribution between the real manufactured structure and the theoretical structure, the curved surface drum-building method and the parameters of the curved surface drum were determined by tire construction simulation. In this article, we present the method for collecting tire material, the measurement process, the analysis method, some general results, and statistics on the wide-base tire. Finally, validation of results of the simulation and measurement are given.
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Ziolkowski, Patryk, Sebastian Demczynski, and Maciej Niedostatkiewicz. "Assessment of Failure Occurrence Rate for Concrete Machine Foundations Used in Gas and Oil Industry by Machine Learning." Applied Sciences 9, no. 16 (2019): 3267. http://dx.doi.org/10.3390/app9163267.
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Concrete machine foundations are structures that transfer loads from machines in operation to the ground. The design of such foundations requires a careful analysis of the static and dynamic effects caused by machine exploitation. There are also other substantial differences between ordinary concrete foundations and machine foundations, of which the main one is that machine foundations are separated from the building structure. Appropriate quality and the preservation of operational parameters of machine foundations are essential, especially in the gas and oil industry, where every disruption in the technological process is costly. First and foremost, there are direct repair costs from damage to foundations, but there are also indirect costs associated with blockages of the production process. Foundation repairs can temporarily shut down a given part of the refining process from operation. Thanks to cooperation from our partner, we obtained data from 510 concrete machine foundations from a refinery. Our database included many parameters, such as concrete cover thickness, machine gravity center distortion, the angular frequency of vertical self-excited vibrations, the angular frequency of horizontal self-excited vibrations, amplitudes of oscillation, foundation area, foundation volume, and information on occurring failures. Concrete machine foundation failure is not yet fully understood. In our study, we assessed what affects the failure occurrence rate of concrete machine foundations and to what extent. We wanted to find out whether there are correlations between the foundation failure occurrence rate and the mentioned parameters. To achieve this goal, we utilized state-of-the-art machine learning techniques.
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Kernytskyy, Ivan, Serhii Baranovych, Serhii Berezovetskyi, Bohdan Diveyev, Orest Horbay, and Ihor Stukalets. "Vibration absorber optimization for boom-sprayer." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 27, no. 4 (2019): 504–15. http://dx.doi.org/10.22630/pniks.2018.27.4.47.
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The main task of this work is to analyze optimal design-system of the booms of boom-sprayers. The discrete-continue models of machines dynamics of such wheeled machines as boom-sprayer with elongated boom element with the attachment of dynamic vibration absorbers are offered. The algorithms for vibration decreasing of boom are received. The new vibroabsorbing elements are proposed. The paper contemplates the provision of dynamic vibration absorbers (DVA) of buffered impact masses and particle type. Such originally designed absorbers reduce vibration selectively in maximum vibration mode, without introducing vibration in other modes. The damping results from the exchange of momentum during impacts among the masses and masses and stops as the structure vibrates. A technique is developed to give the optimal DVA’s as single degree of freedom (SDOF) buffered system. The one-digit values are established not only for the dynamic vibration absorber parameters, but also for mechanical parameter of base structure – boom in connection points of the dynamic vibration absorbers. Finally, present research develops the genetic algorithms for optimal design searching by discrete-continuum DVA’s system – base system modeling.
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Erdei, Timotei István, and Géza Husi. "Singularity measurement in the Cyber-physical and intelligent robot systems laboratory." International Review of Applied Sciences and Engineering 11, no. 2 (2020): 82–87. http://dx.doi.org/10.1556/1848.2020.20001.
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AbstractIn the building mechatronics research centre of University of Debrecen, Faculty of Engineering, a new laboratory has been designed, named “Cyber-physical and intelligent robot systems laboratory”. The possibility to design and test unique and platform-independent systems was among the main goals, hoping that the system itself and its advancements may later be used in manufacturing industries as well.Fulfilling the needs of “Industry 4.0” is a challenging task, as it requires every single device (e.g. industrial robots) to be connected to the same network, where they may be monitored and controlled. However, there are some factors that limit this, such as the periodical “instability” that some machines have, caused by singularity points.The following material studies these so-called singularities of a KUKA KR5 industrial welder robot placed in a robot cell, from an engineering viewpoint.
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Korol, Oleg. "The impact of energy-corrective measures at the design stage of construction projects." MATEC Web of Conferences 193 (2018): 05057. http://dx.doi.org/10.1051/matecconf/201819305057.
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The rational energy consumption during the construction period is formed at the stage of organizational and technological design by a system of energy-correcting measures. The implementation of the complex of measures allows balancing energy consumption and ensuring a high-quality production process with all types of energy users, infrastructural elements of the construction site, and the organization of the operating mode of machines, mechanisms, and labor resources. The object of the study is a complex of developed energy-correcting measures in the organizational and technological design of construction projects. Research methods include multi-criteria analysis based on expert assessments applied to the developed set of energy-correcting measures for the main types of energy consumers in the organizational and technological modeling of the construction process. This analysis of fuel and energy resources consumption by enlarged consumer groups – machines, mechanisms, and equipment; technological processes and infrastructure of the construction site. Varying the time parameters of beginning of the construction works has a significant influence on the consumption of fuel and energy resources for certain groups of consumers. The results of scientific research are presented in the form of a variable complex of energy-correcting measures that allow to flexibly regulating energy consumption in the process of organizational and technological design of buildings.
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Brusk, Jenny, and Torbjörn Lager. "Developing Natural Language Enabled Games in SCXML." Journal of Advanced Computational Intelligence and Intelligent Informatics 12, no. 2 (2008): 156–63. http://dx.doi.org/10.20965/jaciii.2008.p0156.
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The World Wide Web Consortium (W3C) has a standard in the pipeline – called SCXML – that may turn out to be very suitable for the design and implementation of games, in particular games featuring (possibly multimodal) natural language dialogue. We see three main reasons why SCXML may be a good fit for the game industry: 1) SCXML is all about statecharts – a powerful extension of finite-state machines – and we argue that statecharts has the right kind of expressivity for game design and de-velopment, 2) SCXML is an XML dialect (soon to be) endorsed by the W3C, and will thus become a part of a web infrastructure comprising speech technology and telephony, as well as other useful technologies for building games of certain genres, and 3) SCXML is designed for extensibility and it appears that it would be fairly straightforward – and very worthwhile – to build a game oriented extension (“profile”) around the SCXML core. The paper also presents an experimental implementation of SCXML, accessible from a user-friendly web-interface.
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Liu, Hong Mei, Yuan Bin Xu, Cheng Qun Wu, Ai Dong Zhu, and Jun Qiu Zuo. "Research on the Performance of Silt Sintered Insulating Brick and Key Molding Equipment." Advanced Materials Research 919-921 (April 2014): 2002–6. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.2002.
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Silt sintered insulating brick with high strength, good thermal insulation and sound insulation characteristics. It occupies an important position in the new building materials industry. The main equipment for production of silt sintered insulating brick is the vacuum brick extruding machine, the forming mold is the most critical part in it. The performance largely determines the quality of the brick. The structural design and other aspects of the forming mold are analyzed, and then systematically summarize the design and production requirements of the forming mold. The research status of the forming mold on vacuum brick extruding machine at domestic and abroad is reviewed. The main problems of forming mold are analyzed and the corresponding solutions are given, as well as the future developments of forming mold.
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Zimin, E. M., and V. V. Martishkin. "Determining quality of technologies taking into account main production and organizational measures." Omsk Scientific Bulletin, no. 174 (2020): 22–26. http://dx.doi.org/10.25206/1813-8225-2020-174-22-26.
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The article presents the list of singular indicators of technological support of technologies and the method of determining their actual values and their quality levels. According to the results of determining the quality level of technological processes, one of three management decisions can be made. The paper describes singular quality indicators that are directly related to the quality of technological processes in the machine-building industry, at the stage of design and preparation of technical documentation. And also presented are complex quality indicators, based on which determine the generalized indicator of quality of the evaluated technological process. As a result of the work the features of conformity assessment of technological processes and related mandatory requirements are formed. Also described is the process of obtaining a qualitative and quantitative assessment of the quality of the technological process with a detailed description of all necessary formulas
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Song, Xian Chen, and Qing Hua Zhou. "Embedded Machine Tool CNC System Based on the ARM and MCX314." Advanced Materials Research 308-310 (August 2011): 1401–4. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.1401.
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CNC(Computer Numerical Control) machine tool is the foundation and core of modern manufacturing systems, advanced CNC technology is the key to sustainable development of machine tool manufacturing industry. This thesis presents ARM as the main chip, motion control chip MCX314, the operating system using μC / OS-II, to build a CNC system development hardware platform and software platform, to explore the new ways for numerical control system development and design. This thesis can be divided into: CNC system hardware platform structures, including ARM and external hardware selection, hardware interface design and testing; MCX314 hardware platform design and testing; Software Platform, including the use of real-time operating system μC / OS-II to achieve the mission of the NC system, scheduling, management, μC / OS-II transplantation on ARM; MCX314 hardware platform building and testing; application framework built , program design and testing. Test results showed that: ARM as the main chip, MCX314 as a motion controller of the CNC system is feasible, its motion performance can meet the design requirements.
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Киреенко, Vadim Kireenko, Власов, and Aleksey Vlasov. "Nondestructive Testing at “Northern Machine-Building Enterprise” (“Sevmash”)." NDT World 18, no. 3 (2015): 17–20. http://dx.doi.org/10.12737/12566.
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“Sevmash” is one of the biggest Russian shipbuilding enterprises. Its capacity enables high-tech and knowledge-intensive projects to be fulfilled, such as manufacturing of spent nuclear fuel containers, building of modern nuclear-powered submarines (NPS) and marine engineering structures. The enterprise has mastered manufacturing of offshore platforms for oil and gas field development in the Arctic. Now “Sevmash” continues construction of nuclear strategic and multi-purpose submarines of the fourth generation “Borey” and “Yasen”.
 The article deals with the formation and development of non-destructive testing services from its beginning to the present day. Since 1950s, the radiography of hull structures welded seams and pipelines joints was the main testing method. In 1970s construction of new generation nuclear submarines began; it was necessary to create gamma flaw detectors of new design and they were created within 15 years. Besides in 1970s the active period began for development of ultrasonic testing instruments. In 1970s–1990s, concurrently with radiographic and ultrasonic techniques, testing of welds during the welding process with an acoustic emission method was carried out.
 In 1990s magnetic particle inspection of welded joints, radiation monitoring, leakage testing with the use of helium leak detectors and vacuum chambers had been extensively developed. The bubble vacuum method of welded connections testing was widely used in the process of repair and re-equipment of surface crafts. 
 Today “Sevmash” actively re-equips its production facilities. It gives “Sevmash” the opportunity to built ships that meet the highest demands.
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Lu, Yan Jun, and Ying Liu. "Design about Monitoring and Diagnosis System Structure of Rotating Machinery Based on LabVIEW." Advanced Materials Research 383-390 (November 2011): 1792–96. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1792.
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Rotating machinery becomes more and more large and complex, increasingly high degree of automation. Rotating machinery fault could easily lead to heavy losses. Therefore, the requirements of monitoring and diagnosis systems are increasing high. In this paper, the superiority of the application of virtual instrument on condition monitoring and diagnosis system building in the industrial production is described. And then, the rotor system as the main research object, a rotating machinery condition monitoring and diagnosis system is built by using Virtual Instrument technology. At the same time, the structure of the condition monitoring and diagnosis system is discussed. Besides, data acquisition process and fault features recognition method are discussed as well. Finally, the correctness and accuracy of fault detection are verified by means of experiments.
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Bettarello, Federica, Andrea Gasparella, and Marco Caniato. "The Influence of Floor Layering on Airborne Sound Insulation and Impact Noise Reduction: A Study on Cross Laminated Timber (CLT) Structures." Applied Sciences 11, no. 13 (2021): 5938. http://dx.doi.org/10.3390/app11135938.
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The use of timber constructions recently increased. In particular, Cross Laminated Timber floors are often used in multi-story buildings. The development of standardization processes, product testing, design of details and joints, the speed of construction, and the advantages of eco-sustainability are the main reasons why these structures play a paramount role on the international building scene. However, for further developments, it is essential to investigate sound insulation properties, in order to meet the requirements of indoor comfort and comply with current building regulations. This work presents the results obtained by in field measurements developed using different sound sources (tapping machine, impact rubber ball, and airborne dodecahedral speaker) on Cross Laminated Timber floors, changing different sound insulation layering (suspended ceiling and floating floors). Results clearly show that the influence on noise reduction caused by different layering stimulated by diverse noise source is not constant and furthermore that no available analytical model is able to correctly predict Cross Laminated Timber floors acoustic performances.
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Singh, Anvinder, and Varun Sharma. "DESIGN ANALYSIS AND CONSTRUCTION OF ENERGY HARVESTING COAXIAL HELICOPTER." Aviation 17, no. 4 (2013): 145–49. http://dx.doi.org/10.3846/16487788.2013.861230.
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With the growing need for technology, the tendency for errors has increased many times, which often results in loss of human lives. Our main aim of this paper is to show the implementation of a coaxial rotor aerial vehicle that can be controlled by a radio frequency transmitter. The helicopter is capable of manoeuvring in an area where real helicopters cannot. The area could be a flooded region, a place hit by an earthquake, or a building on fire. The main aim is to transmit video of that place to a base station by the camera attached to the helicopter. Various factors required to make a safe and successful coaxial helicopter are discussed and extensive flight testing proves that this flying machine is better in efficiency and performance than a traditional single rotor aerial vehicle. The relation of flight parameters like torque, induced power, rpm, pitch, and total power are discussed. A piezoelectric sensor is used to determine the vibrations occurring in the body so that they can be minimised. A successful attempt to convert the vibrations into a charge by piezoelectric energy harvesters is made.
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Marjianto, Agus, and Dave Mangindaan. "Perancangan Sistem Tata Udara Ditinjau dari Aspek Energi dan Biaya pada Bangunan Hotel di Semarang." Engineering, MAthematics and Computer Science (EMACS) Journal 2, no. 3 (2020): 97–106. http://dx.doi.org/10.21512/emacsjournal.v2i3.6594.
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[Design of air conditioning system based on the energy and costs aspect of hotel buildings in Semarang] Indonesia’s economic growth has been above 5% for the past few years. Tourism industry is one of the sectors that shows a significant progress. The improvement in tourism industry has to be supported with good hospitality industry as well. Air conditioning system is one of the main utilities in a hotel building. The design of the air conditioning system for a hotel building must pay close attention to the thermal comfort factor for the guests, safety factor, and energy and cost efficiency aspect of it. Air conditioning system design consists of cooling load calculation for the hotel, air conditioning system selection, energy and cost calculation using the life cycle cost analysis. The maximum cooling load in this hotel is 3.279 kW. From that cooling load, three alternative systems are being considered, which are the central air conditioning system using chiller machine that has constant flowrate, the central air conditioning system using chiller machine that has variable flowrate, and the split air conditioning system using VRF machine. Energy analysis and life cycle cost analysis for 20 years was performed to be able to decide the best system. From that energy and cost analysis it can be concluded that the second alternative, which is three units of chiller with variable discharge with a capacity of 1,100 kW for each chiller, is the best system for the hotel. This system has an energy consumption intensity value of 118 kWh/m2 per year and total cost of Rp. 87,707,416,390 for a period of 20 years.