Journal articles: 'Gearbox design'

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Bligh, A. O., Noor A. Ahmed, and Y. Y. Zheng. "Design and Manufacture of a Planetary Gearbox Rig." Applied Mechanics and Materials 397-400 (September 2013): 176–88. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.176.

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Planetary gearboxes are required in many applications but have a high failure rate especially in wind turbines where rapid growth in turbine size is placing larger demands on the gearboxes. Current condition monitoring techniques are less effective at detecting faults in planetary gearboxes due to the complexity of the internal rotating components. A small scale planetary gearbox was, therefore, needed for testing on a gearbox test rig to develop a more effective method of condition monitoring. The detailed computer design and manufacture of the planetary gearbox for this purpose is detailed in this paper.

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Кучкаров, Владимир, Vladimir Kuchkarov, Дмитрий Демидов, and Dmitriy Demidov. "HISTORICAL REVIEW OF DESIGN DEVELOPMENT OF MOTOR CAR GEARBOXES." Bulletin of Bryansk state technical university 2017, no. 1 (March 31, 2017): 125–32. http://dx.doi.org/10.12737/24903.

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The paper reports the review in the development of motor car gearbox design. The main task consists in the detection of the reasons for changes in gearbox design for the definition of the field for gearbox substantiated application in motor car design. In the main part the advantages and shortcomings of manual, automated, infinitely variable and automatic gearboxes are under consideration. There are shown and analyzed functional diagrams of gearbox designs considered. In the conclusion it is pointed out that the most promising design of a gearbox is a robot gearbox with two clutches allowing the assurance of the absence of power flow break; the smoothness of gear shifts and smoothness of motion; comfort of control; high fuel efficiency; high tractiondynamic characteristics.

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Lee, Geun-Ho, Young-Jun Park, Ju-Seok Nam, Joo-Young Oh, and Jeong-Gil Kim. "Design of a Mechanical Power Circulation Test Rig for a Wind Turbine Gearbox." Applied Sciences 10, no. 9 (May 7, 2020): 3240. http://dx.doi.org/10.3390/app10093240.

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We developed a mechanical power circulation test rig for a wind turbine gearbox with a power rating of 5.8 MW or less. The test rig consists of an electric motor, two auxiliary gearboxes, a torque-applying device, lubrication systems, cooling systems, and control systems. The torque generating device consists of a planetary gearbox and a hydraulic control system and is used to apply the desired torque to the test gearbox. The hydraulic control system applies the torque on the ring gear of the planetary gearbox. The gears and bearings of the two auxiliary gearboxes and planetary gearboxes met the design criteria for a safety factor of over 1.2 and a bearing life of 30,000 h. In addition, the master and slave gearboxes were connected to the test rig to verify whether the torque-applying device had applied variable torque in real-time during the test. The device was only able to induce a variable torque of up to 45.2 kN-m due to the limitation of the rated torque of the master and slave gearboxes. The test rig can test not only efficiency, vibration, and noise but also durability and overloading.

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Rakhit, A. K. "An Improved Epicyclic Gearbox for Reduced and Controllable Subsynchronous Vibrations in Gas Turbogenerator Applications." Journal of Engineering for Gas Turbines and Power 119, no. 3 (July 1, 1997): 640–46. http://dx.doi.org/10.1115/1.2817032.

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An improvement is made to the design of an epicyclic gearbox that limits the dynamic eccentricities of gearbox components. Gearboxes were manufactured to the new design and tested, showed reduced levels of subsynchronous vibrations at the turbine bearings. The in-situ balancing feature of the gearbox is also found to be very effective in reducing these vibrations further. The improved gearboxes not only assured the service life of the turbine bearings, but also increased the success rate of package testing the first time with substantial cost savings.

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Qu, Heng Xu. "Structure Optimal Design Method and Engineering Application." Advanced Materials Research 311-313 (August 2011): 2440–43. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2440.

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he paper introduces the analysis of finite element for gearbox’s intensity, then optimal design for gearbox has achieved good optimal result leading to the weight reduced 3746kg, 23.18%less than original weight with the thickness of the main board as deign variables and the stress and displacement as constraint conditions. The optimization results have practical significance on the structural optimization and the weight of the gearbox, offering reference data for weight reduction of gear box design.

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Rao, S. S., and H. R. Eslampour. "Multistage Multiobjective Optimization of Gearboxes." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 4 (December 1, 1986): 461–68. http://dx.doi.org/10.1115/1.3258755.

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The problems of kinematic and strength designs of multispeed gearboxes are formulated as multiobjective optimization problems. In the kinematic design stage, the speeds of all the shafts, the number of teeth on various gears and the gear module are selected so as to minimize the deviation of output speeds from specified values and the overall center distance of the gearbox. In the strength design stage, the face widths of the various gear pairs are chosen so as to minimize the volume of the material of the gears and to maximize the power transmitted by the gearbox. A goal programming approach is suggested for the solution of the multiobjective nonlinear constrained optimization problem by treating the ideal feasible solutions as the goals for the corresponding objective functions. The utility of the resulting computer program is demonstrated through the design of six- and 18-speed gearboxes. The present methodology offers the feasibility of automating the design of gearboxes by incorporating all the (conflicting) design requirements and objectives.

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Yang, Wen Zhi, Ju Feng Cao, and Wei Zhang. "Study on Dynamic Simulation of Wind Turbine Gearbox Based on Pro/E and ADAMS." Applied Mechanics and Materials 644-650 (September 2014): 442–45. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.442.

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Domestic wind turbines with 1.5MW gearbox as the research object, application of virtual prototyping technology (ADAMS) simulation of dynamics of wind turbine gearbox when braking .According to research gear box structure, size and other parameters, using Pro / E software to create a solid model of wind turbine gearboxes. After importing to the ADAMS software, add the necessary constraints and loads, virtual prototype model of the gearbox is established. The simulation of dynamics of wind turbine gearbox are carried out by using ADAMS, and the angular velocity of the in-out shaft, gear meshing force and the vibration when braking cloud are obtained. That result is match with the theoretical value through analysis and the accuracy of ADAMS simulation is verified. The simulation results show that the design level of wind turbine gearboxes can be improved by using the virtual prototype technology and lay a good foundation for further design.

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Syromyatnikov, V. S., Garcia Martinez Juan Marcos, Samora Quintana Laura Angelica, and Ortega Rosales Miguel Gersaun. "Design of spur gearbox shafts for fatigue Fatigue Design of Spur Gearbox Shafts." Proceedings of Higher Educational Institutions. Маchine Building, no. 7 (712) (July 2019): 3–10. http://dx.doi.org/10.18698/0536-1044-2019-7-3-10.

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Spur gearboxes are used in machine drives to transfer torque from the engine to the machine’s working element: the driving wheel of the car, the rotor of the helicopter or the drum of the conveyor. Spur gears and bearings are mounted on the shafts of the gearbox. Under the action of torque and forces in the gearing of the wheels, tangential and normal stresses occur in the cross section of the shaft. Normal stress varies in a symmetrical cycle and leads to material fatigue. In view of this, a mathematical model is proposed to improve the accuracy of calculating the overall safety factor for shaft fatigue resistance. Based on the von Mises deformation theory, equivalent stress parameters (amplitude and the mean) are determined. To assess the safety margin of the shaft, Soderberg, Goodman, Gerber, and ASME criteria are used. The stress amplitude margin is calculated depending on the endurance limit of the shaft material, refined according to the specified conditions. The average stress margin is determined relative to the yield strength of the material or the ultimate strength. Formulae for calculating the overall safety factor of amplitude and average stress are obtained. With a known safety factor and load, it is possible to determine the shaft diameter at the preliminary design stage of the gearbox according to the fatigue resistance condition.

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Long, Hui, Jing Ze Wu, and Andrew Firth. "Improving Gearbox Design and Analysis for Offshore Wind Turbines." Applied Mechanics and Materials 86 (August 2011): 309–12. http://dx.doi.org/10.4028/www.scientific.net/amm.86.309.

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The paper outlines challenges in improving wind turbine availability to reduce the cost of offshore wind energy. It reports the development of a design software tool for wind turbine gearboxes. It facilitates efficient conceptual designs of wind turbine gearboxes with combinations of epicyclic and parallel gear trains. Field loading conditions are obtained by analysing SCADA (Supervisory Control and Data Acquisition) data to support fatigue damage estimation based on Miner’s rule. Results show that considerable overloading conditions are present which would result in significant fatigue damages to the gearbox.

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Zamponi, Laurent, Emmanuel Mermoz, and Jean Marc Linares. "Study of Bearing Modelling in the Helicopter Gearbox." Applied Mechanics and Materials 86 (August 2011): 721–24. http://dx.doi.org/10.4028/www.scientific.net/amm.86.721.

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In trying to incessantly reduce gearboxes weight, designers can negatively impact the service reliability, particularly in the aeronautic industry, where a weight reduction is often linked with stiffness decrease. Looking for weight savings, gearbox casings are classically made of magnesium or aluminium alloy. In addition, helicopter gearbox design is included the integration of several functions within the same part (like the shafts which gather one or more gears, splines and integrated bearings raceways). These particularities in the design are requiring some specific methodologies for Power Transmission bearing modelling. In this paper, a comparison between tests and simulations results of the aforementioned gearboxes is presented. The first section of the article focuses on the helicopter gearbox description and associated finite elements modelling. Then, the second section provides a comparison between the experimental observations with the results of both FEM simulation and classical analytical simulation. This comparison demonstrates the interest of using FEM simulation to analyze gearboxes behaviour.

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Geonea, Ionut, Alina Elena Romanescu, Laurentiu Racila, and Ilie Dumitru. "Design of a Transmission for Wheelchairs Intended to Humans with Locomotors Disabilities." Applied Mechanics and Materials 822 (January 2016): 60–67. http://dx.doi.org/10.4028/www.scientific.net/amm.822.60.

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In this paper is presented the development of a wheelchair intended to be use by the people with locomotors disabilities. They are presented various solutions of kinematics schemes proposed to be implemented as a mechanical transmission for the wheelchair. The developed wheelchair integrates a mechanical transmission which allows the movement in a straight line, and also in cornering. The mechanical transmission implemented contains a bevel gearbox. The purpose of the bevel gearbox is to multiply the moment transmitted to the motor wheels for movement on uneven terrain. They are presented aspects concerning the design of the wheelchair frame an of implemented bevel gearboxes.

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Hu, Guo Yu, and Wen Lei Sun. "Virtual Prototype Modeling and Dynamics Analysis of a Large-Scale Wind Turbine’s Gearbox." Advanced Materials Research 314-316 (August 2011): 1043–47. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1043.

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With the gearbox of a large-scale wind turbine as a study object, the virtual prototype model of gearbox is created based on UG and ADAMS softwares according to its design parameters such as structure and size. By rigid and flexible dynamics analysis for gearbox, the angular velocity and acceleration curves of the in-out shaft are obtained. Gear meshing forces and flexible body stress cloud using ADAMS are also obtained. It is verified that these results are coincided with the theoretical value through analysis and the simulation results of ADAMS are valid. The simulation results show that the design level of wind turbine gearboxes can be improved using the virtual prototype technology and lay a good foundation for further optimal design.

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Luo, Su Jun, Xue Ling Zhang, and Shu Feng Chai. "Design of Automobile Driving Trainer Simulated Gearbox." Applied Mechanics and Materials 312 (February 2013): 66–68. http://dx.doi.org/10.4028/www.scientific.net/amm.312.66.

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According to the work principle of the automobile manual gearbox, the author has designed a new type of automobile driving trainer simulated gearbox. The principle of the simulation of various organization compositions of gearbox and the simulation of the feeling to the real organization function and the operation dynamics are introduced, and the practical application effect of the simulated gearbox has been summarized at last.

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Jammu, V. B., K. Danai, and D. G. Lewicki. "Structure-Based Connectionist Network for Fault Diagnosis of Helicopter Gearboxes." Journal of Mechanical Design 120, no. 1 (March 1, 1998): 100–105. http://dx.doi.org/10.1115/1.2826659.

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A new method of diagnosis is introduced for helicopter gearboxes that relies on the knowledge of the gearbox “structure” and characteristics of the “features” of vibration for component fault isolation. Both the structural knowledge and featural knowledge in this method are defined as the fuzzy weights of a connectionist network that maps each sampled set of vibration features, obtained from a signal analyzer, into fault possibility values associated with individual gearbox components. The structural weights in this network are defined to represent the influence of gearbox component faults on the overall vibration sensed by each accelerometer, and the featural weights are defined to denote the influence of components faults on individual vibration features. Given the extremely complex structure of helicopter gearboxes which prohibits accurate modeling of the effect of faults on their vibration, the structural weights in this method are defined based on the root mean square value of the frequency response of a simplified lumped-mass model of the gearbox. The experimental evaluation of the method based on vibration data from two different gearboxes is included in a separate paper.

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Fiorineschi, Lorenzo, Susanna Papini, Luca Pugi, Andrea Rindi, and Federico Rotini. "Systematic design of a new gearbox for concrete mixers." Journal of Engineering, Design and Technology 18, no. 6 (June 1, 2020): 2017–42. http://dx.doi.org/10.1108/jedt-10-2019-0254.

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Purpose The purpose of this study is to identify an innovative solution for the power transmission gearbox of concrete mixers, according to the specifications provided by the company. Design/methodology/approach A tailored systematic design approach (inspired to the German systematic framework) has been adopted to comprehensively gather the company specifications and perform in-depth design space explorations. Subsequently, an iterative embodiment design approach has been followed to identify the size of the components for the preferred concept, by using acknowledged mechanical design procedures and finite element analysis tools. Findings An innovative cycloidal gearbox has been developed, by merging the kinematics underpinning the classical cycloidal drives and the Wolfrom planetary gearbox. The resulting concept provides high reduction rates with a very high overload capacity. Research limitations/implications The main limitation of the studies is the absence of in-depth evaluations usually performed in the detail design phase. However, this limitation is a direct consequence of the company specifications, which only asked to find a preferred concept and to perform preliminary evaluations. Accordingly, the subsequent design optimization are intended to be performed by the company’s staff. Originality/value The present paper shows an original design approach, opportunely tailored to the design of innovative gearboxes. It can be conveniently adapted and reused by designers involved in similar tasks. Moreover, the designed cycloidal gearbox paves the way for important innovations in the field of concrete mixers, allowing to design more robust and compact devices.

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Bhattacharjee, Debraj, Prabha Bhola, and Pranab K. Dan. "A heuristic synthesis of multistage planetary gearbox layout for automotive transmission." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 233, no. 2 (March 14, 2018): 336–47. http://dx.doi.org/10.1177/1464419318759893.

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The automatic transmission system is very crucial for the high-speed vehicles, where the planetary or epicyclic gearbox is a standard feature. With the increase in design intricacies of planetary gearbox, mathematical modelling has become complex in nature and therefore there is a need for modelling of multistage planetary gearbox including the shifting scheme. A random search-based synthesis of three degrees of freedom (DOF) high-speed planetary gearbox has been presented in this paper, which derives an efficient gear shifting mechanism through designing the transmission schematic of eight speed gearboxes compounded with four planetary gear sets. Furthermore, with the help of lever analogy, the transmission power flow and relative power efficiency have been determined to analyse the gearbox design. A simulation-based testing and validation have been performed which show the proposed model is efficient and produces satisfactory shift quality through better torque characteristics while shifting the gears. A new heuristic method to determine suitable compounding arrangement, based on mechanism enumeration, for designing a gearbox layout is proposed here. An important finding on automotive gear shift quality due to closer gear ratio is also reported in this work.

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Xue, Yan Hua, Xiao Hong Li, Zhi Guang Wang, and Jie Song. "Dynamic Optimization Design of a Warship’s Gearbox Based on FEM." Applied Mechanics and Materials 86 (August 2011): 662–65. http://dx.doi.org/10.4028/www.scientific.net/amm.86.662.

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The transmission system of warship’s gearbox is increasingly developing in the direction of high-speed, high-efficiency, heavy-load and light-weight, and the requirements of vibration are increasing as well. The gearbox designed according to static standard often has various problems of instability and vibration which greatly weaken the behaviors of gearbox and influence the invisibility performance of warship seriously. To improve the vibration characteristics of gearbox, vibration modal analysis of a warship’s gearbox is studied based on FEM. In order to avoid resonance in transmission, double-frequency dynamic optimization design of a gearbox is studied and discussed. The method and conclusions can be used as a reference of design of warship’s gearbox.

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Keller, Jonathan, Yi Guo, Zhiwei Zhang, and Doug Lucas. "Comparison of planetary bearing load-sharing characteristics in wind turbine gearboxes." Wind Energy Science 3, no. 2 (December 21, 2018): 947–60. http://dx.doi.org/10.5194/wes-3-947-2018.

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Abstract. In this paper, the planetary load-sharing behavior and fatigue life of different wind turbine gearboxes when subjected to rotor moments are examined. Two planetary bearing designs are compared – one design using cylindrical roller bearings with clearance and the other design using preloaded tapered roller bearings to support both the carrier and planet gears. Each design was developed and integrated into a 750 kW dynamometer tests, the loads on each planet bearing row were measured and compared to finite-element models. Bearing loads were not equally shared between the set of cylindrical roller bearings supporting the planets even in pure torque conditions, with one bearing supporting up to 46 % more load than expected. A significant improvement in planetary bearing load sharing was demonstrated in the gearbox with preloaded tapered roller bearings with maximum loads 20 % lower than the gearbox with cylindrical roller bearings. Bearing life was calculated with a representative duty cycle measured from field tests. The predicted fatigue life of the eight combined planet and carrier bearings for the gearbox with preloaded tapered roller bearings is 3.5 times greater than for the gearbox with cylindrical roller bearings. The influence of other factors, such as carrier and planet bearing clearance, gravity, and tangential pin position error, is also investigated. The combined effect of gravity and carrier bearing clearance was primarily responsible for unequal load sharing. Reducing carrier bearing clearance significantly improved load sharing, while reducing planet clearance did not. Normal tangential pin position error did not impact load sharing due to the floating sun design of this three-planet gearbox.

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Zheng, Zhan Qiang, Wan Kai Shi, and Kai You Liu. "Operational Modal Test for Wind Turbine Gearbox." Applied Mechanics and Materials 86 (August 2011): 483–86. http://dx.doi.org/10.4028/www.scientific.net/amm.86.483.

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Wind turbine gearbox is a key component of wind power system and it is prone to failure because of complex working environment, so the vibration and noise problems of it can not be ignored. The modal parameters of gearbox can be got by experiment method, which is a necessary condition to improve the structure of gearbox and make dynamic analysis and design to it. Modal testing has been used to gearbox by operational modal analysis which is in several actual working conditions and the modal parameters in corresponding working conditions is obtained by stochastic subspace identification. Meanwhile the acceleration response of wind turbine gearbox’s high-speed output shaft in different working conditions was also analyzed.

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Chen, Z. S., Yong Min Yang, Z. X. Ge, and C. Li. "Embedded Sensing Design of Gearboxes for Vibration Monitoring." Applied Mechanics and Materials 29-32 (August 2010): 264–68. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.264.

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Vibration signal analysis is one of the most effective ways for condition monitoring of gearboxes. Traditional way is often to mount additional accelerometer sensors on their cases, which has two unavoidable defects: signal-to-noise ratio is often low due to long signal travel paths and it may be not allowable due to space limitations. While embedded diagnostics (ED) can solve these two problems well by embedding sensors close to fault sources. However, embedded sensing design is a great challenge of ED because embedded sensors must have effects on the structure integrity of a gearbox. So it is necessary to determine how to embed sensors in order to ensure normal functions of a gearbox. In this paper, a finite element-based structure analysis method was proposed to perform embedded sensing design of bearings and gears to determine the optimal modified structure size.

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Jánoš, Rudolf, and Baňasová Antónia. "CELL DESIGN FOR GEARBOX ASSEMBLY." TECHNICAL SCIENCES AND TECHNOLOG IES, no. 3(13) (2018): 49–54. http://dx.doi.org/10.25140/2411-5363-2018-3(13)-49-54.

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Urgency of the research. Automation is the next step in increasing productivity and performance. It represents the autonomous management of the entire system as well as the assembly or production process. This completely eliminates a human factor from the work process. Target setting. Today's robots and manipulators are now autonomous. Automated systems can be found in almost all industries. They are an indispensable part of non-productive environments, but we can also find them in non-industrial areas as well. Their dynamic development extends to service robotics. For their productivity, they have reached a high level, but their development is constantly advancing by refining their subsystems, introducing new functional principles, or upgrading compo-nents and elements involved in the construction of these mechanisms. Actual scientific researches and issues analysis. To meet the requirements of automatition cells, it was slowly being applied to flexible production systems. These are systems that consist of computers and are connected by means of control units. They are characterized by complexity, flexibility and, above all, the multiplicity of elements. Such flexible systems based on the modularity, that systems are composed of individual modules and subsystems that can be adapted as needed. Uninvestigated parts of general issues defining. Design of automated robotic workplaces, based on the intensive development of functional and especially kinematic structures of the workplace as a whole. The research objective. To what extent is it possible for the work process to be mechanized or automated depends also on the level of development of the used equipment. In today's development stage, design of automated device is also automated. The statement of basic materials. This article focuses on the design of the manipulator, whose main task is to perform the assembly. Analysis of the task illustrates the principle design of the solution, which is also the starting point for the design of the universal manipulator. Current requirements of application practice for robotic technology have caused increased requirements for its functions, characteristics and parameters which cannot be always covered by the traditional approach to its design and construction. Conclusions. In this article describes in more detail the knowledge and division of the proposed devices and mechanisms, which provides an initial understanding of design. By analyzing the problem and defining the necessary parameters, the design of the manipulator was developed. Festo's design software also helped to make the right choice.

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Zhou, Jianxing, Wenlei Sun, and Qing Tao. "Gearbox Low-Noise Design Method Based on Panel Acoustic Contribution." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/850549.

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This paper presents a comprehensive procedure to calculate steady dynamic response and generated noise radiation from a gear reducer. In this process, the dynamic model of the cylindrical gear transmission system is built in consideration of the time-varying mesh stiffness, gear errors, and bearing supporting, while the data of dynamic bearing force is obtained through solving the model. Furthermore, taking the data of bearing force as the excitation, the gearbox vibrations and noise radiation are calculated by numerical simulation, and then the time history of node dynamic response, noise spectrum, and resonance frequency range of the gearbox are obtained. At last, the gearbox panel acoustic contribution at the resonance frequency range is calculated. According to the conclusions of the gearbox panel acoustic contribution analyses and the mode shapes, two gearbox stiffness improving plans is researched. By contrastive analysis of gearbox noise radiation, the effectiveness of the improving plans are verified. The study provides useful theoretical guideline to the gearbox design.

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Cao, Qi Feng, Hai Ying Du, Yue Chun Zhang, and Ping Liu. "Design of Wind Turbine Gearbox Housing." Applied Mechanics and Materials 86 (August 2011): 619–22. http://dx.doi.org/10.4028/www.scientific.net/amm.86.619.

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The requirements of wind turbine gearbox design techniques were recommended, and structure characteristics were analyzed. The housing of wind turbine gearbox was designed to be more compact and lighter by finite element analysis.

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Ma, Baoqi, Zhenping Wan, Zhibiao Hu, Zhantong Li, Chongyang Han, Zhiheng Zeng, Zefeng Zheng, Ting Tang, and Weibin Wu. "Application of Simulation Software in Optimization of Powertrain of Pure Electric Vehicle." International Journal of Emerging Technology and Advanced Engineering 10, no. 11 (November 30, 2020): 42–55. http://dx.doi.org/10.46338/ijetae1120_05.

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— Pure electric vehicles are a research hotspot in today's new energy vehicle industry. Its core is the electromechanical coupled drive system (drive motor and gearbox), and its performance affects the overall performance of pure electric vehicles. The application of industrial software for electromagnetic design, electrothermal design, electromagnetic vibration and noise optimization of drive motors, heat transfer analysis, fatigue analysis, and noise optimization analysis of gearboxes has become important technologies for designing and manufacturing the core components of electromechanical coupling drive systems.This article analyzes the current status and existing problems of the development of simulation software for the core components (drive motor and gearbox) of the electromechanical coupling drive system of electric vehicles, and proposes solutions to key technical problems, and proposes the development direction of unified simulation of drive motor and gearbox on the electromechanical coupling platform

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Patwardhan, Mayuresh V. "Catia Customization for Design and Modeling of Two Stage Spur Gearbox." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 14, 2021): 764–73. http://dx.doi.org/10.22214/ijraset.2021.35082.

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In this paper, we describe how the customization of design task, in solid modeling with CATIA V5 for two stage spur gearbox can be approached, by means of macros (piece of code) and with GUI form. The user has to supply some basic requirements of the gearbox and rest of the different parameters for design of gearbox is calculated by formulas. And then with the help of these parameters, part model of gearbox is created.

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Ling, Ling, and Yong Huang. "Topology Optimization Design of Gearbox Housing in Electric Bus." Applied Mechanics and Materials 574 (July 2014): 173–78. http://dx.doi.org/10.4028/www.scientific.net/amm.574.173.

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The virtual prototyping technology in corporation with a finite element analysis was first used to analyze the strength and stiffness of gearbox casing in an electric bus. On the basis of this analysis, the topology optimization technology (TOT) based on the variable density method was introduced into the design of gearbox casing which takes the minimized total flexibility of gearbox as the objective function, the density of each cell as the design variable and the volume as the design constraint. Then, according to the results of topology optimization and the requirements of manufacturing process, the structure of gearbox casing was designed in detail. Finally, the stress analysis of the housing model of the final design was carried out. The results show that the optimized housing not only meets the design requirements of stiffness and strength, but also reduces its quality, which can make the performance of gearbox achieve optimal.

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Verbruggen, Frans J. R., Emilia Silvas, and Theo Hofman. "Electric Powertrain Topology Analysis and Design for Heavy-Duty Trucks." Energies 13, no. 10 (May 12, 2020): 2434. http://dx.doi.org/10.3390/en13102434.

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Powertrain system design optimization is an unexplored territory for battery electric trucks, which only recently have been seen as a feasible solution for sustainable road transport. To investigate the potential of these vehicles, in this paper, a variety of new battery electric powertrain topologies for heavy-duty trucks is studied. Thereby, topological design considerations are analyzed related to having: (a) a central or distributed drive system (individually-driven wheels); (b) a single or a multi-speed gearbox; and finally, (c) a single or multiple electric machines. For reasons of comparison, each concurrent powertrain topology is optimized using a bilevel optimization framework, incorporating both powertrain components and control design. The results show that the combined choice of powertrain topology and number of gears in the gearbox can result in a 5.6% total-cost-of-ownership variation of the vehicle and can, significantly, influence the optimal sizing of the electric machine(s). The lowest total-cost-of-ownership is achieved by a distributed topology with two electric machines and two two-speed gearboxes. Furthermore, results show that the largest average reduction in total-cost-of-ownership is achieved by choosing a distributed drive over a central drive topology (−1.0%); followed by using a two-speed gearbox over a single speed (−0.6%); and lastly, by using two electric machines over using one for the central drive topologies (−0.3%).

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Inoue, K., D. P. Townsend, and J. J. Coy. "Optimum Design of a Gearbox for Low Vibration." Journal of Mechanical Design 115, no. 4 (December 1, 1993): 1002–7. http://dx.doi.org/10.1115/1.2919247.

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A computer program was developed for designing a low vibration gearbox. The code is based on a finite element shell analysis, a modal analysis, and a structural optimization method. In the finite element analysis, a triangular shell element with 18 degrees-of-freedom is used. In the optimization method, the overall vibration energy of the gearbox is used as the objective function and is minimized at the exciting frequency by varying the finite element thickness. Modal analysis is used to derive the sensitivity of the vibration energy with respect to the design variable. The sensitivity is representative of both eigenvalues and eigenvectors. The optimum value is computed by the gradient projection method and a unidimensional search procedure under the constraint condition of constant weight. The computer code is applied to a design problem derived from an experimental gearbox in use at the NASA Lewis Research Center. The top plate and two side plates of the gearbox are redesigned and the contribution of each surface to the total vibration is determined. Results show that even the optimization of the top plate alone is effective in reducing total gearbox vibration.

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Rattanachan, Kittiphat. "The New Rolling Mill Gearbox Concept Design." Applied Mechanics and Materials 619 (August 2014): 33–37. http://dx.doi.org/10.4028/www.scientific.net/amm.619.33.

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Gear design is a state of art in mechanical design topic. In this paper, the systematic gear design concept was used to design the double output shaft gearbox for rolling mill, the aim to reduce cost of production. The design process starts from receive the requirement data, elaborate the data to the design specification. Make a conceptual design, embodiment design or preliminary design and finally detailed design. The all design methodology has suggested systematic decision-making procedures for early stages of the design. The design result is leading to change from the traditional two stage gearbox into the single stage gearbox ratios 1:2.3.

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Dang, Phuong Xuan. "Design and manufacture of cycloid reduction gearbox made by combined materials for working in corrosive environment." Science and Technology Development Journal 20, K5 (August 31, 2017): 81–86. http://dx.doi.org/10.32508/stdj.v20ik5.1163.

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This paper presents research result of design and manufacture of the cycloidal gearbox with some advantages such as low noise, high transmission ratio, high load, and erosive resistance. The new point of this works is the utilization of combined stainless materials that can be worked in an erosive environment, especially in the aquatic mechanical area, in order to save material and to increase the cycle life of this equipment. Besides, the cycloidal gearbox with stainless steel and polymer materials can be lubricated by water and is used with water-resistant or submersible electric motor. This new cycloidal gearbox can replacethe worm gearbox. A 1,5 HP cycloidal gearbox with the reduction ratio 29 that is used in aquaculture has been designed and manufactured successfully. In this work, the analytical method and numerical simulation are used to design and manufacture the gearbox. For the future works, this cycloidal gearbox will be tested in the real environment with aquaculture aerator system so that its performance will be fully verified and assessed

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31

Yang, Shao Bo, Jun Fu Zhang, Jin Ge Wang, and Xing Qiao Deng. "Optimal Design of Drive System in Wind Power Generation Acceleration Gearbox Based on Matlab." Applied Mechanics and Materials 34-35 (October 2010): 50–56. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.50.

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Performance of gearbox drive system has a great impact on the working life of the whole drive mechanism, especially in wind power generation systems. Using the power split differencial drive system, the objective function of speed up Gearbox optimal design is built adopting the nonlinear constrant minimum function Fmincon from Matlab, the constraints are settled and the relevant parameters of the gearbox with the minimum volume while satisfying the transmission ratio are finally obtained. Then the optimised results is verified with single factor method. The results show that the overall volume of the gearbox is reduced by 9.13% after optimization.

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Su, Dai Zhong, and Zhong Ming Ren. "Ecological Impact Assessment and Eco-Design of Industrial Gearboxes." Key Engineering Materials 486 (July 2011): 197–200. http://dx.doi.org/10.4028/www.scientific.net/kem.486.197.

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This paper presents an approach for ecological impact assessment of industrial gearboxes using Simapro and ReCiPe method. The importance and necessity of sustainability for product design and manufacture is introduced first, and then the methodology of ecological impact (eco-impact) assessment suitable for eco-design is presented, which includes the calculations of eco-impact elements and indicators, human labor eco-impact, a three tiers approach for eco-impact calculation, and an optimum eco-design procedure. A case study of a traditional spur gearbox is presented to illustrate the methods developed.

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Wang, Lian Sheng, and Zhi Yong Hao. "Transmission Noise Analysis of Gearbox Using Aluminum and Magnesium Cast Alloys Based on Structure-Acoustic Coupling Method." Applied Mechanics and Materials 540 (April 2014): 151–54. http://dx.doi.org/10.4028/www.scientific.net/amm.540.151.

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In order to study the characteristics of manual gearbox transmission noise, the sound insulation performance of gearbox was analyzed with the structure-acoustic coupling method. The constraint modal and sound transmission loss between aluminum alloy (ADC12) and magnesium alloy (AZ91D) material gearbox was compared. At last, analysis results show that magnesium alloy gearbox overall weight fell about 33%, but its sound insulation performance got worse, so it is necessary to improve on the structure design and make its natural frequency to avoid noise peak frequencies. This method provides new ideas for gearbox lightweight design and noise optimization.

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Król, Roman. "Kinematics and dynamics of the two stage cycloidal gearbox." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (June 30, 2018): 523–27. http://dx.doi.org/10.24136/atest.2018.125.

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This article presents results of the numerical analysis of cycloidal gearbox, which were obtained in MSC Adams engineering software. Multibody geometry for dynamical analysis was designed in Autodesk Inventor Professional 2017 and imported in MSC Adams. The results of analysis are forces acting on the internal and external sleeves, position, velocity and acceleration of the selected points on the cycloidal gearbox’s moving components. Indirect result is time course of the torque at output shaft which was calculated on the basis of forces acting on the internal sleeves, which are parts of the equilibrium mechanism and displacements of these sleeves. Knowledge about cycloidal gearbox’s loading conditions is important in its design process. Main advantage of a cycloidal gearbox is distribution of the forces on multiple external sleeves, while in majority of other gears only one tooth is in contact at a time.

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Kamandar, Mohammad Reza. "The Selection, Designing and Analysis of Heavy Duty Tractor Gearbox (ITM8200)." Applied Mechanics and Materials 110-116 (October 2011): 2948–57. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2948.

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In recent years, ITM 399 series tractor has been manufactured in Iran Tractor Manufacturing Company (ITM), which can be suitable for small farms operations. For big farms operations, minimizing energy consumption, decreasing the time losses and increasing work efficiency, a heavy duty tractor of ITM 8200 series was started to design in the same Company. The gearbox selection, design and analysis for this tractor with the engine power of 154 horse power is studied in this research. The mechanical gearbox equipped with mechanical-hydraulic dynashift system was used in ITM 8200 power transmission system. The dynashift system produces four cases (A, B, C and D) with 8 speeds that produced by main gearbox, which altogether produces 32 forward speeds and 32 reverse speeds for this new tractor. To design the gearbox, with recommended speeds, gearbox ratios and gears ratios was calculated. Then by using the engine torque and slip torque on tractor gearbox, the exerted loads on gears were calculated. After this, by using of American Gear Manufacturing Association (AGMA) method and computer programming design, the gears have been designed. Finally one of the gears in ANSYS software analyzed. The results of this analysis show that: The gears have been designed for tractor gearbox can endure loading and transfer the power requirement of new tractor. The design safety factor of gears has been obtained by ANSYS software approximately equals with safety factor of AGMA methodology. In gear analysis, for applying load to one of gear tooth (unit contact ratio), stress distribution will produce in gear body and especially on neighboring teeth body. For tractor gearbox design, it would be necessary to include slip torque, which will decrease the gear width and gearbox volume.

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Gajdosik, Tomas, Frantisek Brumercik, Michal Lukac, and Pawel Drozdziel. "Vehicle Planetary Gearbox Simulation." LOGI - Scientific Journal on Transport and Logistics 9, no. 1 (May 1, 2018): 11–17. http://dx.doi.org/10.2478/logi-2018-0002.

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AbstractThis article is about design and calculation of planetary gearbox which can be used in transport applications. The gearbox is designed with respect to the input parameters. The gearbox has two planetary gears. The model of gearbox is created in Simscape Driveline software containing blocks which represent the key components of the gearbox. There is also a kinematic analysis performed and confronted with the simulation results.

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Zhang, Guang Guo, Lei Zhang, and Zhi Bin Chang. "Design of a Pile Press Machine for Automobile Gearbox Tapered Roller Bearing." Applied Mechanics and Materials 157-158 (February 2012): 300–303. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.300.

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There are many problems in the off-line manual press mounting of tapered roller bearing outer ring of some automobile gearbox shell, which are unstable quality, poor precision, the low efficiency and high labor intensity. In order to solve these problems, we designed a vertical pile press machine. PLC is used to achieve automatic control production, and the stable mounting force provided by air pressure system can adapt to the press mounting requirements of the bearings of eight and nine shift gearbox shell. On being applied to the automatic production line, it can press-mount simultaneously the outer ring of intermediate shaft bearing and the second shaft bearing, and switch rapidly between the eight shift gearbox and the nine shift gearbox. Therefore the automatic production is achieved , which improvs the production efficiency , ensures the assembly quality, and brings higher profit to the enterprise.

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Park, Young-Jun, Geun-Ho Lee, Jin-Seop Song, Yong-Yun Nam, and Sung-Ha Park. "Planet Bearing Design of Slewing Planetary Gearbox." Journal of manufacturing engineering & technology 21, no. 2 (April 15, 2012): 316–23. http://dx.doi.org/10.7735/ksmte.2012.21.2.316.

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39

Ghayal, Atul, Piyush Narkhede, Chetan Bonde, Shyamsundar Epper, and A. S. Chandore. "Design And Analysis Of 9 Speed Gearbox." International Journal of Scientific and Research Publications (IJSRP) 10, no. 06 (June 18, 2020): 830–36. http://dx.doi.org/10.29322/ijsrp.10.06.2020.p10298.

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Bezák, Juraj, Peter Bezák, and Alena Vajdová. "Design of Double-row Magnetic Cycloid Gearbox." Manufacturing Technology 15, no. 2 (April 1, 2015): 119–25. http://dx.doi.org/10.21062/ujep/x.2015/a/1213-2489/mt/15/2/119.

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41

Manyala, John O., Todd Fritz, and Massood Z. Atashbar. "Gearbox Speed Sensor Design and Performance Optimization." IEEE Sensors Journal 13, no. 2 (February 2013): 629–36. http://dx.doi.org/10.1109/jsen.2012.2224862.

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42

Başak, Hüdayim, and Ahmet Taşkesen. "Comprehensive gearbox design using expert system techniques." Computer Applications in Engineering Education 16, no. 2 (2008): 157–64. http://dx.doi.org/10.1002/cae.20132.

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43

Zhao, Li Min. "MASTA Software for Wind Turbine Gearbox Design." Advanced Materials Research 490-495 (March 2012): 2259–63. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.2259.

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Wind turbine technology has developed rapidly in recent years. Increasing component reliability to achieve 20% wind energy will require advancements in component design, materials, and testing methods to validate wind-turbine components in the harshest environments. At the core of many of the solutions offered by SMT is MASTA, our fully integrated software tool for the complete design, analysis and optimization of transmission systems. Designers & engineers can use MASTA to rapidly predict key transmission performance characteristics and to identify any design faults or weaknesses before any manufacturing is started, saving both time and money. MASTA’s reliable analysis techniques can improve the power, performance, reliability, and cost effectiveness of wind turbines. The mix of commercial and proprietary software will provide a complete assessment and optimization of the wind turbine through detailed dynamic and static analysis of key component functions for their efficiency and design life.

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44

Salgado, D. R., and F. J. Alonso. "Optimal machine tool spindle drive gearbox design." International Journal of Advanced Manufacturing Technology 37, no. 9-10 (May 4, 2007): 851–60. http://dx.doi.org/10.1007/s00170-007-1028-6.

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45

Barathiraja, K., G. Devaradjane, Anup Bhattacharya, V. Sivakumar, and Vivek Yadav. "Automotive Transmission Gearbox Synchronizer Sintered Hub Design." Engineering Failure Analysis 107 (January 2020): 104213. http://dx.doi.org/10.1016/j.engfailanal.2019.104213.

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46

Loc, N. H. "Reliability based design of shaft for gearbox." IOP Conference Series: Materials Science and Engineering 1109, no. 1 (March 1, 2021): 012017. http://dx.doi.org/10.1088/1757-899x/1109/1/012017.

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47

Wang, Zhong, Ming Rui Chen, and Xing Fu. "Application of Behavioral Modeling Technology in Gearbox Cabinet Optimal Design." Applied Mechanics and Materials 58-60 (June 2011): 141–46. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.141.

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The behavior modeling technology is introduced. A gearbox cabinet model is analyzed and optimized in this paper with Pro/Engineer behavioral modeling tool, the geometry of gearbox cabinet model is generated and controlled through the intelligent approach of knowledge capture and iterative solution, the optimum design results are obtained, and multi-objective design of the cabinet model is also analyzed in this paper.

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48

Zhang, Le, and Qiang Yang. "Investigation of the Design and Fault Prediction Method for an Abrasive Particle Sensor Used in Wind Turbine Gearbox." Energies 13, no. 2 (January 11, 2020): 365. http://dx.doi.org/10.3390/en13020365.

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The gearbox is a key sub-component of a wind power generation system with high failure rate leading to shutdowns. By monitoring the abrasive particles in the lubricating oil when the gearbox is running, any abnormal condition of the gearbox can be found in advance. This information may be used to improve the operational safety of the wind turbine and reduce losses because of shutdowns and maintenance. In this paper, a three-coil induction abrasive particle sensor is designed based on the application of high-power wind turbine gearbox. The performance of the sensor and the design method of the detection circuit are described in detail, and the sensor operation performance used in the 2 MW wind turbine is verified. The results show that the sensor has superior performance in identifying ferromagnetic abrasive particles above 200 μm and plays a good role in status monitoring and fault prediction for the gearbox.

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Alexandru, Petre, Dragoş Macaveiu, and Cătălin Alexandru. "Design and simulation of a steering gearbox with variable transmission ratio." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 10 (January 6, 2012): 2538–48. http://dx.doi.org/10.1177/0954406211433984.

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This article presents the geometric and functional characteristics of a steering gearbox with variable transmission ratio, which contains a translating wheel (circular curved rack) in gearing with an eccentric sector (segment). The solution requires no special technology because it uses conventional involute gears, being obtained/derived from a classic gearbox with constant ratio by changing the gearing characteristics. The precision of the steering system and the reversibility of the gearing are not affected by these modifications, the driver having a good/safe control of the vehicle. This gearbox can be used for the steering systems of some low-power vehicles, assuring an increased actuating torque (less effort); in this way, the assistance (hydraulic power steering or electric power steering) can be avoided. The study is focused on the following objectives: formulating the theoretical bases, establishing the geometrical parameters, and simulating the functionality of the gearbox, based on the specific requirements of the vehicles’ steering system. Important conclusions have been drawn on the influence of some specific parameters in terms of insuring good gearing conditions, such as the variation of the distances between axes and the variation of the clearance between teeth.

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Wu, Guo Yang, Cheng Rong Jiang, and Yi Jian Liao. "Modal Analysis and Experiment on 2.0 MW Wind Turbine Gearbox." Advanced Materials Research 542-543 (June 2012): 52–56. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.52.

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By using Solidworks, a three-dimensional solid model of the wind turbine gearbox is established. Use Spring element in ANSYS joins transmission system and case structure system, the whole gearbox coupling dynamic model is built up and the first 20-order bound mode of the gearbox is calculated. Through modal analysis and experimental test show that the structure of wind turbine gearbox is reasonable, and resonance wouldn’t occur during the operational process, ensure the reliability of the unit operation and that for the wind turbine gearbox structure design to provide the theoretical basis.

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Journal articles on the topic 'Gearbox design'

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