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Artykuły w czasopismach na temat „EQUIVALENT STATIC FORCE TECHNIQUE”

Autor: Grafiati

Data publikacji: 11 września 2023

Data aktualizacji: 19 lipca 2025

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1

Huang, Ming-Hui, Chung-Lin Fu, Yu-Wen Hsu, and Yuan-Lung Lo. "Determination of Multiple-target Equivalent Static Wind Load of Large-span Roof Structures based on Clustering Analysis Techniques." International Journal of Architectural Engineering Technology 10 (December 27, 2023): 118–39. http://dx.doi.org/10.15377/2409-9821.2023.10.9.

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Spatial structures in modern society exhibit a city’s distinguishing features and show its strength in building technology. Large-span roof structures are mostly seen among spatial structures for various activities. Large-span roof structures are usually sensitive to wind loads due to their lightness in materials and curved geometric appearance. However, spatial structures are generally designed with many structural members, making it challenging to determine adequate load distributions for structural safety analysis. This paper intends to introduce the concept of the multiple-target equivalen

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Zinco, Adamo, Fernando Fraternali, Gianmario Benzoni, and Enzo Martinelli. "On the Distribution in Height of Base Shear Forces in Linear Static Analysis of Base-Isolated Structures." Buildings 10, no. 11 (2020): 197. http://dx.doi.org/10.3390/buildings10110197.

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Although base isolation is nowadays a well-established seismic-protection technique for both buildings and bridges, and several issues are still open and attract the interest of the research community. Among them, the formulation of computationally efficient and accurate analysis methods is a relevant aspect in structural design of seismic-isolated buildings. In fact, codes and guidelines currently in force in various parts of the world generally include the possibility for designers to utilize linear-elastic analysis methods based on equivalent linearization of the non-linear force-displaceme

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Figliolini, Giorgio, and Massimo Sorli. "Open-loop Force Control of A Three-finger Gripper Through PWM Modulated Pneumatic Digital Valves." Journal of Robotics and Mechatronics 12, no. 4 (2000): 480–93. http://dx.doi.org/10.20965/jrm.2000.p0480.

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This paper proposes an open-loop force control system for a three-finger gripper using small digital solenoid valves modulated using PWM (Pulse-Width-Modulation) technique. These valves are good candidates for this robotic application because of their small dimensions, low weight and cost, simple structure and easy operation by means of on/off signals. A linear model for pressure control in the pneumatic actuator's thrust chamber was developed and tested experimentally. A large dead-band was introduced in the PWM driver in order to investigate a suitable method for its correction. Good results

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Jiang, Shan, Fude Sun, Jiansheng Dai, Jun Liu, and Zhiyong Yang. "Design and analysis of a tendon-based MRI-compatible surgery robot for transperineal prostate needle placement." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 2 (2014): 335–48. http://dx.doi.org/10.1177/0954406214533783.

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Tendon-based transmission has significant advantages in the development of a surgical robot, which is fully magnetic resonance imaging compatible and can work dexterously in the very limited space inside magnetic resonance imaging core. According to the requirements of magnetic resonance imaging compatibility, a novel 6 degrees of freedom tendon-based surgical robot composed of three independent modules is developed in this paper. After a brief introduction to the robot, the direct and inverse kinematic equations are deduced by applying the concept of screw displacements, and the reachable wor

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P, Oliver Jayaprakash, Damodhara Reddy B, Mohan Babu M, and Herald Lessly S. "Design and Modelling of Intze Water Tanks in Seismic Zones by Using M40 Grade Concrete." Indian Journal of Science and Technology 16, no. 27 (2023): 2016–23. https://doi.org/10.17485/IJST/v16i27.46.

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Abstract <strong>Objectives:</strong> To provide an efficient analysis and design for Intze water tank that is secure and safe. An reinforced concrete building (intze water tank) with a 0◦ to 10◦ ground slope is modelled using STAAD PRO analysis. Based on IS 1893(Part-l):2002 code the seismic weight is evaluated. To achieve best results, the proposed techniques compared with the existing approaches. <strong>Methods:</strong> In the current investigation, different Seismic Zones i.e. Zone-II, Zone-III, Zone-IV, & Zone-V is performed by Response Spectrum Method. Tremor investi

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Singh, A., N. Nawayseh, L. P. Singh, S. Singh, and H. Singh. "Investigation of Compressive Stress on Lumbar Spine due to Whole Body Vibration Exposure in Rotary Tillage Operation." International Journal of Automotive and Mechanical Engineering 16, no. 2 (2019): 6684–96. http://dx.doi.org/10.15282/ijame.16.2.2019.16.0503.

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The aim of this study is to investigate the compressive stress on lumbar spine due to whole body vibration (WBV) exposure in real field rotary soil tillage operation. The spinal stress was evaluated in terms of daily equivalent static compression dose (Sed) with respect to various ride conditions (i.e. forward speed, pulling force and tilling depth). Taguchi's L9 orthogonal array was used to form a systematic set of experiments by varying each ride condition over three levels. Signal-to-noise (S/N) ratios were computed to analyse the holistic effect of ride conditions among all the experimenta

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Hu, Botao, Linan Cheng, Xiaobo Sun, and Fanchen Deng. "Design Technique of the Test Static for Large Curvature Composite Radome." Journal of Physics: Conference Series 2553, no. 1 (2023): 012019. http://dx.doi.org/10.1088/1742-6596/2553/1/012019.

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Abstract The radome is an important component that maintains the aerodynamic shape of the aircraft, makes the electrical property stable, and ensures flight safety. Composite is used in most aircraft radome in the world to reduce the weight of the aircraft. For the sake of safety, a static strength test was usually conducted on the radome to verify whether its strength and stiffness meet the requirements. In this paper, the load was treated equivalently, and a lever loading system of nonparallel force was put forward considering the characteristics of the large curvature of the radome structur

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Meena, Balveer Singh, Atul Kumar Shrivastava, and Kunal Bhelave. "A Finite-element Method of Solution for Optimization of Frame of Tractor Operated Single Row Maize Cobs Picker." International Journal of Plant & Soil Science 35, no. 3 (2023): 154–59. http://dx.doi.org/10.9734/ijpss/2023/v35i32787.

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Finite element analysis (FEA) is a computational technique that divides complex structures into small elements and solves them numerically using various partial differential equations. In agriculture, engineers can use numerical simulation based on the FEA technique to study the behaviour of various input products in order to optimise the design of any machine without developing a prototype. The present study focused to design and simulates the frame of tractor operated single row maize cobs picker by employing the FEA technique. A 3D-CAD model of the frame of a tractor-operated single row mai

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Niraula, Badri Prasad, and Nirav Patel. "A Review on Seismic Analysis of RCC and Steel Structures using Linear and Non-linear Static Analysis." International Journal for Research in Applied Science and Engineering Technology 11, no. 10 (2023): 536–42. http://dx.doi.org/10.22214/ijraset.2023.55972.

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Abstract: An earthquake can cause significant harm to various aspects, including buildings, general life, and particularly multistory structures. In India, structures constructed in earthquake-prone regions, as defined by IS 1893: 2002, must be designed to withstand the loads, stresses, and consequences of earthquakes. Several techniques are available for assessing multi-story structures in this context, such as the Response Spectrum Method, Equivalent Lateral Force Method, Time History Method, and adhering to specific code provisions. Numerous researchers have undertaken studies to analyze mu

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Boulkhiout, Radhwane. "Soil Densification Effect on The Seismic Response of Structures Taking into Consideration Soil-Structure Interaction." Civil Engineering Beyond Limits 2, no. 4 (2021): 13–17. http://dx.doi.org/10.36937/cebel.2021.004.003.

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Soil compaction is a considerable construction activity to ensure safety and durability, notably in the transportation industry. This technique of compaction increases soil bulk density and soil strength, while decreases porosity, aggregate stability index, soil hydraulic conductivity, and nutrient availability, thus reduces soil health. Consequently, it lowers crop performance via stunted aboveground growth coupled with reduced root growth. Therefore, if the characteristics of the soil are changed, it will affect the response of the structures. In this work, the effect of improving soil chara

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Ahmad, Naveed, Qaisar Ali, and Muhammad Umar. "Seismic Vulnerability Assessment of Multistory Timber Braced Frame Traditional Masonry Structures." Advanced Materials Research 601 (December 2012): 168–72. http://dx.doi.org/10.4028/www.scientific.net/amr.601.168.

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Research carried out on the seismic investigation of timber braced frame (TBF) masonry structures of traditional construction practice is presented, essential for seismic performance evaluation of such construction type using engineering approaches. An innovative simplified equivalent frame method (EFM) based on macro modelling approach is presented for nonlinear dynamic seismic analysis of TBF masonry structures. The modelling include EFM idealization of wall using stiff elastic beam-column element assigned with moment-rotation (M-θ) nonlinear lumped plasticity hinges. Earlier, the approach i

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Yazdani, Aref. "Field Equations and Radial Solutions in a Noncommutative Spherically Symmetric Geometry." Advances in High Energy Physics 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/349659.

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We study a noncommutative theory of gravity in the framework of torsional spacetime. This theory is based on a Lagrangian obtained by applying the technique of dimensional reduction of noncommutative gauge theory and that the yielded diffeomorphism invariant field theory can be made equivalent to a teleparallel formulation of gravity. Field equations are derived in the framework of teleparallel gravity through Weitzenbock geometry. We solve these field equations by considering a mass that is distributed spherically symmetrically in a stationary static spacetime in order to obtain a noncommutat

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13

Khanal, Nabin. "Seismic Analysis of Multi-Story RCC Framed Buildings with Symmetric and Asymmetric Design." International Journal of Innovative Research in Engineering and Management 12, no. 2 (2025): 39–45. https://doi.org/10.55524/ijirem.2025.12.2.7.

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A disruptive disturbance known as an earthquake occurs when subterranean movement along a fault line causes the earth's surface to tremble. An earthquake is a natural disaster that has claimed millions of lives throughout history. Due to fatalities and destruction, every earthquake leaves a path of suffering. The bhuj earthquake was the first time when multi-story reinforced concrete buildings in India experienced a significant ground motion shaking. The main causes of failure have been determined to be soft stories, floating columns, irregular masses, subpar building materials and bad constru

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Abate, Mistreselasie, Ana Catarina Jorge Evangelista, and Vivian W. Y. Tam. "A Comparison Analysis of Buildings as per Norwegian and Ethiopia ES-EN1998-1 Seismic Code." Buildings 14, no. 6 (2024): 1841. http://dx.doi.org/10.3390/buildings14061841.

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An earthquake is one of the most significant and shocking natural disasters ever documented anywhere on the planet. Throughout history, it has claimed millions of lives and wreaked devastation on infrastructure. Because earthquake forces are spontaneous and unpredictable, engineering methods must be honed to investigate buildings under the impact of these forces. The dynamic and static computations of four RC multistory structure prototypes with various elevations in a high seismic zone are compared in this paper. The project under review is modeled as a 3, 6, 12, and 18-story establishment, a

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Qureshi, Ramla Karim, Negar Elhami-Khorasani, and Thomas Gernay. "Adaption of active boundary conditions in structural fire testing." Journal of Structural Fire Engineering 10, no. 4 (2019): 504–28. http://dx.doi.org/10.1108/jsfe-12-2018-0042.

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Purpose This paper aims to investigate the need for active boundary conditions during fire testing of structural elements, review existing studies on hybrid fire testing (HFT), a technique that would ensure updating of boundary conditions during a fire test, and propose a compensation scheme to mitigate instabilities in the hybrid testing procedure. Design/methodology/approach The paper focuses on structural steel columns and starts with a detailed literature review of steel column fire tests in the past few decades with varying axial and rotational end restraints. The review is followed with

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Naraghi, Tahereh, and Ali S. Nobari. "A novel method for the identification of a model for the nonlinear characteristic of a bolted lap-joint." Journal of Vibration and Control 23, no. 3 (2016): 484–500. http://dx.doi.org/10.1177/1077546315581238.

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Joints are the main source of nonlinearity and energy dissipation in large assembled structures which could be otherwise considered as linear. Consequently, modeling and parameter identification of joints play a significant role in any successful design and finite element (FE) modeling of structures. In the present research, an identification procedure is proposed for the modeling of the nonlinear behavior of a bolted joint. The main emphasis are placed on the simplicity of the experimental procedures involved as well as ease of incorporation of the identified model in the FE model of the stru

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Bhelave, Kunal, Atul Kumar Shrivastava, and Balveer Singh Meena. "A Finite-Element Method for Enhancement Issues of Frame of Battery Operated Ridge Planter with Drip Line Installer." International Journal of Environment and Climate Change 13, no. 9 (2023): 1355–62. http://dx.doi.org/10.9734/ijecc/2023/v13i92364.

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Using distinct partial differential equations, complicated structures breaks down into small elements using the computational approach known as finite element analysis (FEA). Engineers in agriculture can investigate the behavior of numerous input products using numerical simulation based on the FEA technique in order to enhance the design of any machine without constructing a prototype. The current study employed the FEA technique to develop and simulate the frame of a battery-operated ridge planter with a drip line installer. A static structural test was performed through using the FEA techni

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Ye, Qianchuan, and Benjamin Delaware. "Taypsi: Static Enforcement of Privacy Policies for Policy-Agnostic Oblivious Computation." Proceedings of the ACM on Programming Languages 8, OOPSLA1 (2024): 1407–36. http://dx.doi.org/10.1145/3649861.

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Secure multiparty computation (MPC) techniques enable multiple parties to compute joint functions over their private data without sharing that data with other parties, typically by employing powerful cryptographic protocols to protect individual's data. One challenge when writing such functions is that most MPC languages force users to intermix programmatic and privacy concerns in a single application, making it difficult to change or audit a program's underlying privacy policy. Prior policy-agnostic MPC languages relied on dynamic enforcement to decouple privacy requirements from program logi

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Tayebi, Noureddine, Thomas F. Conry, and Andreas A. Polycarpou. "Reconciliation of nanoscratch hardness with nanoindentation hardness including the effects of interface shear stress." Journal of Materials Research 19, no. 11 (2004): 3316–23. http://dx.doi.org/10.1557/jmr.2004.0425.

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The definitions of hardness from nanoscratch and nanoindentation analyses with a spherical indenter were compared and shown to be mathematically equivalent for the case of zero interface shear stress (surface traction). The definition of nanoindentation hardness was taken as the ratio of the resultant force to the area of contact projected on a plane normal to the line of action of the resultant force, whereas in the case of the nanoscratch technique, the hardness and interfacial shear stress were related to the measured normal and lateral forces in a nanoscratch experiment, as well as to the

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Utegenova, Shinara. "Implementation of the sliding-line technique in a MEC model of a linear bistable actuator." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 41, no. 1 (2021): 517–27. http://dx.doi.org/10.1108/compel-07-2021-0230.

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Purpose The aim of this study is to investigate the implementation of the sliding-line technique (SLT) in a generic two-dimensional (2D) nonlinear adaptive magnetic equivalent circuit (MEC) model predicting the electromagnetic force evolution of a linear bistable electromagnetic actuator technology. Design/methodology/approach The developed MEC model considers the saturation effect and the auto-adjustability of the spatial discretisation. The connection between static and mobile zones is ensured by an approach known as “air-gap sliding-line technique”, which is widely used for rotary electric

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Zhang, Ruijie, Dan Ye, Jianting Zhou, and Dengzhou Quan. "Seismic Analysis Method for Underground Structure in Loess Area Based on the Modified Displacement-Based Method." Applied Sciences 11, no. 23 (2021): 11245. http://dx.doi.org/10.3390/app112311245.

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At present, the seismic design research of underground structures in loess areas is lagging behind compared with practical engineering requirements. The selection of seismic calculation methods and parameters does not consider the influences of the special geological conditions in various regions, so their usefulness is limited. Based on the above problems, a modified displacement-based method (DBM) was proposed and its application was compared with the most commonly used methods of analysis (force-based design method, displacement-based design method, detailed equivalent static analysis numer

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Deng, M. L., and B. Z. Yue. "Attitude Dynamics and Control of Liquid Filled Spacecraft with Large Amplitude Fuel Slosh." Journal of Mechanics 33, no. 1 (2016): 125–36. http://dx.doi.org/10.1017/jmech.2016.60.

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AbstractThis paper focuses on the attitude dynamics and control of liquid filled spacecraft, and the large amplitude fuel slosh dynamics is included by using an improved moving pulsating ball model. The moving pulsating ball model is an equivalent mechanical model that is capable of imitating the whole liquid reorientation process, specifically for the occurrence of large amplitude slosh. This model is improved by incorporating a static capillary force and an effective mass factor. The improvements on this model are validated with previously published experiment results. The spacecraft attitud

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Zeng, Qing Na, Sheng Li Lv, Lei Jiang Yao, and Xiao Yan Tong. "Damage Mechanism of Plain Weave C/SiC Composites Subjected to Quasi-Static Indentation Loading." Advanced Materials Research 211-212 (February 2011): 217–21. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.217.

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Quasi-static indentation (QSI) tests on plain weave carbon fiber reinforced silicon carbide (C/SiC) ceramic matrix composites (CMC) have been performed to study the damage evolution law and damage modes. Acoustic emission (AE) and Ultrasonic C-scan techniques are creatively used to monitor the damage process and detect the indented damage, respectively. The damage development process could be described by three evidently different stages: initial crack tips spreading along within the matrix, matrix cracking and delamination as well as fiber bundles breakage of different layers. The AE activity

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Hariri-Ardebili, Mohammad Amin, and Victor E. Saouma. "Random Response Spectrum Analysis of Gravity Dam Classes: Simplified, Practical, and Fast Approach." Earthquake Spectra 34, no. 2 (2018): 941–75. http://dx.doi.org/10.1193/021517eqs033m.

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The seismic risk of concrete dams may be assessed using various numerical techniques, ranging from simplified methods to linear and nonlinear ones. Such methods should be combined with probabilistic concepts to account for the randomness in both demand and capacity. This paper proposes a random version of a simplified response spectrum method (involving equivalent static lateral forces [ESLFs]) for gravity dams by means of propagating uncertainties through the input parameters. Input parameter sensitivity is quantified and the extended procedure is explained step by step. Results are then gene

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Yu, Muchun, Xue Gao, and Qian Chen. "Study of the Mechanical Properties and Vibration Isolation Performance of a Molecular Spring Isolator." Shock and Vibration 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/6451829.

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Molecular Spring Isolator(MSI) is a novel passive vibration isolation technique, providingHigh-Static-Low-Dynamic(HSLD) stiffness based on the use ofmolecular springmaterial. Themolecular springmaterial is a solid-liquid mixture consisting of water and hydrophobic nanoporous materials. Under a certain level of external pressure, water molecules can intrude into the hydrophobic pores of nanoporous materials, developing an additional solid-liquid interface. Such interfaces are able to store, release, and transform mechanical energy, providing properties like mechanical spring. Having been only r

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Tiwari, Anubhav, Ishfaq A. Ahmed, Vijay Kumar Gupta, Rakesh Kumar Haldkar, and Ivan A. Parinov. "Customised Implant for Temporomandibular Joint: New Technique to Design and Stress Analysis to Balance the Loading at Both Ends." Micromachines 14, no. 8 (2023): 1646. http://dx.doi.org/10.3390/mi14081646.

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The temporomandibular joint (TMJ) is a critical joint for the opening and closing of the mouth. The generation of customised TMJs according to individuals’ dental anatomy is needed. Currently, the implants available on the market lack consideration of the patient’s dental anatomy. This leads to the creation of an imbalance in the reaction forces on both ends of the TMJ. This requires a slight structural change in the design parameters to give a solution. The purpose of this study is to propose a new design that includes the geometry and materials for a TMJ implant. Stress analysis was carried

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Martynenko, Volodymyr. "Numerical and experimental study of the conical connection of the blade of a rotary machine." Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines, no. 1 (December 21, 2023): 14–20. http://dx.doi.org/10.20998/2078-9130.2023.1.284029.

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The paper presents an experimental and numerical study of the tapered socket of the aluminum blade root of the mine main ventilation fan, which is based on the tests of a simplified full-scale model with a discarded airfoil and its subsequent finite element analysis. The calculation model takes into account elastoplastic properties of materials and non-linear contacts with friction. The proposed joint consists of an aluminum tapered blade root, two steel retainers with similar tapered surfaces, and two steel bolts that join the retainers around the root. Pre-tightening the bolts allows fixing

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Paull, A., R. J. Stalker, and D. J. Mee. "Experiments on supersonic combustion ramjet propulsion in a shock tunnel." Journal of Fluid Mechanics 296 (August 10, 1995): 159–83. http://dx.doi.org/10.1017/s0022112095002096.

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Measurements have been made of the propulsive effect of supersonic combustion ramjets incorporated into a simple axisymmetric model in a free piston shock tunnel. The nominal Mach number was 6, and the stagnation enthalpy varied from 2.8 to 8.5 MJ kg−1. A mixture of 13% silane and 87% hydrogen was used as fuel, and experiments were conducted at equivalence ratios up to approximately 0.8. The measurements involved the axial force on the model, and were made using a stress wave force balance, which is a recently developed technique for measuring forces in shock tunnels. A net thrust was experien

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Cocchi, Lorenzo, Alessio Picchi, and Bruno Facchini. "Effect of Rotation and Hole Arrangement in Cold Bridge-Type Impingement Cooling Systems." International Journal of Turbomachinery, Propulsion and Power 4, no. 2 (2019): 13. http://dx.doi.org/10.3390/ijtpp4020013.

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Experimental activity has been performed to study different impingement cooling schemes in static and rotating conditions. Geometry replicates a leading-edge cold bridge system, including a radial supply channel and five rows of film-cooling and showerhead holes. Two impingement geometries have been studied, with different numbers of holes and diameters but with equal overall passage area. Reynolds numbers up to 13,800 and rotation numbers up to 0.002 have been investigated (based on an equivalent slot width). Tests have been performed using a novel implementation of transient heat transfer te

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Thenappan, Shanmugasekar. "Investigation of Dynamic Factor, Rail Stress and Track Foundation Modulus of Ballasted Railway Track for Different Bed Conditions Using Numerical Methods." IOP Conference Series: Materials Science and Engineering 1200, no. 1 (2021): 012018. http://dx.doi.org/10.1088/1757-899x/1200/1/012018.

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Abstract The track stiffness is the primary function of roadbeds thickness and subgrade characteristics. For this purpose, numerical scale track finite element technique representing the ballasted track with multi layered substructure founded on subgrade was simulated. The track deflection, stress was abstracted in static and dynamic conditions. The track significant design parameters: Foundation modulus, rail fatigue strength, rail bending stress and stress on subgrade levels were evaluated by using improved current track design numerical methods and compared against field test results which

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Khedr, Mohamed A., and Ghyslaine McClure. "A simplified method for seismic analysis of lattice telecommunication towers." Canadian Journal of Civil Engineering 27, no. 3 (2000): 533–42. http://dx.doi.org/10.1139/l99-090.

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A simplified static method for estimating the member forces in self-supporting lattice telecommunication towers due to both horizontal and vertical earthquake excitations is presented in this paper. The method is based on the modal superposition technique and the response spectrum approach, which are widely used for seismic analysis of linear structures. It is assumed that the lowest three flexural modes of vibration are sufficient to correctly estimate the tower's response to horizontal excitation, while only the lowest axial mode is sufficient to capture the response to vertical excitation.

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ЧУРИЛОВ, Д. Г., И. С. АРАПОВ, А. В. СТАРУНСКИЙ, and С. Д. ПОЛИЩУК. "JUSTIFICATION OF APPLICATION MODES OF MACHINING ATTACHMENTS FOR PROCESSING PARTS BY THE METHOD OF PLASTIC DEFORMATION." VESTNIK RIAZANSKOGO GOSUDARSTVENNOGO AGROTEHNOLOGICHESKOGO UNIVERSITETA IM P A KOSTYCHEVA, no. 2(50) (June 30, 2021): 136–41. http://dx.doi.org/10.36508/rsatu.2021.50.2.019.

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Проблема и цель. Установлено, что функциональное действие машин в значительной мере определяется параметрами качества их поверхностного слоя. Цель работы – обеспечение качества поверхностного слоя деталей одним из наиболее эффективных способов, обеспечивающих управление в широком диапазоне показателями качества обработки деталей поверхностным пластическим деформированием (ОУО ППД). Одни и те же параметры качества поверхностного слоя можно получить, используя различные методы и режимы ОУО ППД. Для их оценки необходимо определение трудоемкости операции. Следовательно, имеет место совокупность на

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Ramos, Leandro Ito, Douglas Jhon Ramos, and Gregory Bregion Daniel. "Evaluation of textured journal bearings under dynamic operating conditions in rotating machinery." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 6 (2019): 842–57. http://dx.doi.org/10.1177/1350650119887568.

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In order to obtain rotating machinery with improved energy efficiency, the approach of surface texturing journal bearings has been adopted to reduce the viscous dissipation in the lubricant. A possible reduction in shear viscous forces in the bearings of rotating machines could reduce the amount of heat released along its operation, resulting in a lower operating temperature that tends to improve journal bearings performance and the machine’s energetic efficiency. Thus, this work aims to investigate the texturing of journal bearings under dynamic loading conditions, considering the application

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Kudryavtsev, I. V., M. M. Mikhnev, and P. N. Silchenko. "A Calculation Procedure for Strength Analysis of Wave Guides for Ensuring Improved Mass-Dimensional Parameters." Proceedings of Higher Educational Institutions. Маchine Building, no. 05 (722) (May 2020): 50–61. http://dx.doi.org/10.18698/0536-1044-2020-5-50-61.

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This paper presents a calculation procedure for designing waveguides with iproved mass-dimensional parameters, which ensures the required strength and stiffness characteristics under static, dynamic and deformational loads. The procedure is based on the analysis of methods for determining the stress-strain state of the waveguide-and-distribution systems of spacecraft. The first stage of the procedure involves modelling the waveguide-and-distribution systems in a general formulation by a rod structure with equivalent loading and fixing conditions and determining the stress-strain state of such

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Li, Junqing, Changxi Zhao, Yongkang Lu, Yipin Su, Yang Zhang, and Wei Liu. "Online Sensing of Thermal Deformation in Complex Space Bulkheads Driven by Temperature Field Measurements." Electronics 14, no. 12 (2025): 2405. https://doi.org/10.3390/electronics14122405.

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In the assembly of spacecraft cabins, the presence of uncertain and time-varying temperature environments can induce thermal deformation in bulkheads, potentially affecting dimensional stability. Online sensing of thermal deformation is critical for mitigating such risks. However, conventional finite element methods (FEMs) rely on cascading thermal and structural analyses, which suffer from inefficiency. To address this issue, we propose a methodology that integrates a physical model with a data-driven temperature field measurement technique, demonstrated through case studies involving a space

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Longarini, Nicola, Pietro Crespi, Marco Zucca, and Manuela Scamardo. "Numerical Evaluation of the Equivalent Damping Ratio Due to Dissipative Roof Structure in the Retrofit of Historical Churches." Applied Sciences 15, no. 6 (2025): 3286. https://doi.org/10.3390/app15063286.

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This paper is focused on the numerical evaluation of the equivalent damping ratio (EDR) given by a dissipative wood-based roof diaphragm in the seismic retrofitting of single-nave historical churches. In the design phase, the EDR could be a key parameter to select the optimal roof structure configuration, thereby obtaining the maximum energy dissipation. In this way, the roof structure works as a damper to facilitate a box behavior of the structure during the seismic response. The EDR measures the energy dissipated by the nonlinear behavior of the roof’s steel connections and masonry walls dur

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Гребеников, А. Г., И. В. Малков, С. П. Светличный, И. Н. Москаленко та О. Ю. Кривых. "МЕТОД ПІДТВЕРДЖЕННЯ РЕСУРСНИХ ХАРАКТЕРИСТИК МЕТАЛЕВОЇ ЛОПАТІ НЕСУЧОГО ГВИНТА ВЕРТОЛЬОТА ЗА РЕЗУЛЬТАТАМИ ВИПРОБУВАНЬ". Open Information and Computer Integrated Technologies, № 96 (23 лютого 2023): 34–96. http://dx.doi.org/10.32620/oikit.2022.96.03.

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The helicopter main rotor blade is the basic product that determines the reliability and service life of the helicopter as a whole. The problem of predicting and ensuring the specified blade life is an urgent problem considered at the stage of its design. The analysis of the design, structural materials and design and technological solutions of the main rotor blade (RB) of the Mi-8 helicopter has been carried out. A brief description of the main rotor blade of the Mi-8 helicopter is presented. The analysis was carried out and a standard flight cycle (SFC) of the helicopter was developed. The t

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Krot, Pavlo, Radoslaw Zimroz, Anna Michalak, et al. "Development and Verification of the Diagnostic Model of the Sieving Screen." Shock and Vibration 2020 (June 18, 2020): 1–14. http://dx.doi.org/10.1155/2020/8015465.

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The minerals processing enterprises are widely using vibrating machines to separate different fractions of materials. Sieving efficiency is greatly dependent on particle trajectories, or orbit, of periodical motion over the sieving decks. A screening process is very dependable on design parameters such as the vibrator power, synchronisation of their drives, and oscillation frequency as well as the stiffness of supporting springs. Deterioration of supporting springs (stiffness reduction and cracks) due to cyclic loading and fatigue is difficult to determine by the visual inspection, static load

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Ma, Yanhua, Xueqian Chen, and Wenjie Zuo. "Equivalent static displacements method for contact force optimization." Structural and Multidisciplinary Optimization 62, no. 1 (2020): 323–36. http://dx.doi.org/10.1007/s00158-020-02500-y.

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Zhang, Xiang Ming, Li Bao Zhu, An Wen Wang, Shao Hong Yang, and Ming Yong Hu. "Superficial Discussion on New Framework of Static Equilibrium." Applied Mechanics and Materials 670-671 (October 2014): 691–95. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.691.

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Statics is set up on the basis of 4 axioms of statics. Although these axioms are distillate and summarizing of the accumulated humankind's experience in long-range production and life, introduction of these axioms to statics seems a bit abrupt, especially the critical axiom "resultant of two forces" far fetched. This article was an attempt to present the embodying description of the effect of force and force system, based on the nature of effect of force and the equivalent and equilibrium of force systems. On this basis, theorem of two forces resultant and the theorem of two forces balance wer

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Qi, Xin, Qianqian Deng, Lei Zhao, et al. "Equivalent Relationship of the Mechanical Behavior of Ring Nets under Static Punching and Dynamic Impact Conditions." Buildings 13, no. 3 (2023): 588. http://dx.doi.org/10.3390/buildings13030588.

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To build the equivalent relationship of the mechanical behavior of ring nets under static punching and dynamic impact conditions, a series of tests with different parameters were conducted. The equivalent coefficients of breaking force, breaking displacement, and net energy dissipation were defined to describe the potential relationship. Besides, sensitivity analyses were made. The results showed that, with the increase of impact velocity, the equivalent coefficients of breaking force decreased as a power function, and the equivalent coefficients of breaking displacement and net energy dissipa

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Xu, Jie, Keiji Yamada, Katsuhiko Seikiya, Ryutaro Tanaka, and Yasuo Yamane. "A Basic Study on the Relations Between Machining Conditions and the Static and Dynamic Components of Forces in Drilling." International Journal of Automation Technology 7, no. 3 (2013): 345–52. http://dx.doi.org/10.20965/ijat.2013.p0345.

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This paper discusses a method of converting thrust and torque detected during drilling, which transforms thrust and torque into equivalent thrust force and principal force. The static and dynamic components defined according to this method are used to evaluate instability. The effects of different conditions on the static and dynamic components are investigated through experiments.

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Song, Meng Yan, Ge Tian, Ming Wu Yuan, Li Na Ge, Jing Jing Song, and Xiang Rong Fu. "Dynamic Characteristic Analysis of the 3D Spring Model of Column with Triangular Section." Applied Mechanics and Materials 353-356 (August 2013): 3304–7. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.3304.

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In this paper, the equivalent mechanical spring model of the three-dimensional continuum is studied. By using stiffness calculation formulas of three-dimensional continuum column under axial force and bending force, which are primary force states in the column, a mechanical equivalent trusses model with the same width and height is derived. The equivalent model is statically indeterminate trusses system of spring. The 3D spring calculation model can be used in the dynamic characteristic analysis. With the comparison of the first four order frequency values between the solid model and the equiv

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Wang, Liang. "Gear Shaft Optimization Design." Academic Journal of Science and Technology 3, no. 2 (2022): 92–95. http://dx.doi.org/10.54097/ajst.v3i2.2099.

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Multi-objective optimization design of gear shaft, first determine the design variables, gear shaft structure size mainly includes length size and radius size, gear shaft shaft diameter as the optimization variable, the equivalent force of gear shaft is an important indicator of static performance, and the gear shaft is optimized with the maximum equivalent force of gear shaft as the optimization goal.

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Eidukynas, Rimantas, and Valdas Barauskas. "ANALYSIS OF CONTACT PROBLEMS IN ELASTIC—PLASTIC METAL SEALS/TAMPRIŲJŲ METALINIŲ SANDARIKLIŲ KONTAKTINĖS SĄVEIKOS TYRIMAS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 3, no. 10 (1997): 37–42. http://dx.doi.org/10.3846/13921525.1997.10531682.

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One of the most important problems in the design of seal joints is the optimisation of their shape and the material properties. This paper presents the results of the numerical simulation of conical and cantilever seal joints contact problems by using the finite element system ANSYS 5.0A. The temperature and friction have been taken into account. The sealing principle of conical seals, which are usually used as flange joints in networks of pipes, is based on large plastic deformations of seal edges and maintaining the highly elastic property of the whole construction of the seal. Fig 1 present

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Song, Zhiqiang, Fei Wang, Yujie Liu, and Chenhui Su. "Infinite Element Static-Dynamic Unified Artificial Boundary." Shock and Vibration 2018 (July 5, 2018): 1–14. http://dx.doi.org/10.1155/2018/7828267.

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The method, which obtains a static-dynamic comprehensive effect from superposing static and dynamic effects, is inapplicable to large deformation and nonlinear elastic problems under strong earthquake action. The static and dynamic effects must be analyzed in a unified way. These effects involve a static-dynamic boundary transformation problem or a static-dynamic boundary unified problem. The static-dynamic boundary conversion method is tedious. If the node restraint reaction force caused by a static boundary condition is not applied, then the model is not balanced at zero moment, and the calc

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Maguire, James R., Lip H. Teh, G. Charles Clifton, and Timothy J. McCarthy. "Equivalent static force method for selective storage racks with uplifting baseplates." Journal of Constructional Steel Research 165 (February 2020): 105821. http://dx.doi.org/10.1016/j.jcsr.2019.105821.

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Gevorgyan H.A. "Generalized Rotation Tensor of An Arbitrary Spatial System of Forces." International Journal of Inventive Engineering and Sciences 12, no. 6 (2025): 19–23. https://doi.org/10.35940/ijies.l1006.12060625.

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The proposed article presents an extension of the well-known theorem of theoretical mechanics about three moments, which is valid for an arbitrary plate system of forces, to the general case of an arbitrary spatial system of forces. Existence and uniqueness theorems for a symmetric static tensor of moments are formulated with a presentation of their proofs. For an arbitrary spatial system of forces, the dynamic tensor of moments is also formulated. A technique is presented for determining the principal directions and principal values of the moment tensor, for which the number of its independen

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Ningrum, Diana, Albertus Nahak, and Nawir Rasidi. "Comparison Analysis of Equivalent Static Earthquake and Spectrum Response Dynamics on Steel Structure." Asian Journal Science and Engineering 1, no. 2 (2023): 103. http://dx.doi.org/10.51278/ajse.v1i2.548.

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The purpose of this study is to compare two methods of seismic load analysis, namely the static equivalent method and the dynamic response spectrum method. The case study is the integrated service building of Tribhuwana Tunggadewi University, Malang City which has 5 levels and is located in the 4 (medium) earthquake zone with moderate soil conditions. The research method used is descriptive quantitative. Collecting data of project drawings, as well as observations and interviews. Analysis method Equivalent static and dynamic response spectrum using software Staad Pro. The results compared are

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ZHOU, XUANYI, and MING GU. "AN APPROXIMATION METHOD FOR COMPUTING THE DYNAMIC RESPONSES AND EQUIVALENT STATIC WIND LOADS OF LARGE-SPAN ROOF STRUCTURES." International Journal of Structural Stability and Dynamics 10, no. 05 (2010): 1141–65. http://dx.doi.org/10.1142/s0219455410003944.

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Due to their sensitivity to wind, the design of large-span roofs is generally governed by wind loads. For some flexible large-span roofs with low damping and concentrated modes, the effect of multi-mode coupling should be taken into account in computing the resonant buffeting response and equivalent static wind loads. Such an effect is considered by the modified SRSS method in this paper via the modal coupling factor. Based on the same SRSS method, the equivalent static wind loads combining the mean, background, and resonant components, are computed. Particularly, the background and resonant c

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