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Journal articles on the topic 'Multi Body Dynamic'

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Author: Grafiati

Published: 14 March 2023

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1

Park, Dongil, and Doohyung Kim. "Vibration Analysis of the Flexible Beam Using Dynamic Solver K_Sim." Journal of Advance Research in Mechanical & Civil Engineering (ISSN: 2208-2379) 2, no. 12 (December 31, 2015): 01–06. http://dx.doi.org/10.53555/nnmce.v2i12.324.

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We developed the dynamic solver including the pre-processor with GUI, kinematic/dynamic solver and the post-processor. This can support to analyze the flexible body dynamics as well as the rigid body dynamics. Because almost robot system has the multi bodies including some flexible bodies, multi flexible body dynamics is very important. In the paper, we carried out the vibration analysis of the flexible beam using the developed dynamic solver K_Sim and compared it to the commercial multi flexible body dynamic solver.

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Jingyang, Zhong, Song Bifeng, and Wang Jin. "Flapping Wing Multi-body Dynamic Simulation." Procedia Engineering 99 (2015): 885–90. http://dx.doi.org/10.1016/j.proeng.2014.12.617.

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3

Rahnejat, H. "Multi-body dynamics: Historical evolution and application." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 1 (January 1, 2000): 149–73. http://dx.doi.org/10.1243/0954406001522886.

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The historical developments in the discipline of engineering dynamics are briefly reviewed, with attention paid to the formulation and solution of the dynamic behaviour of multi-body systems. It is shown that the dynamic characteristics of practical multi-body systems are dependent upon the interactions of many physical phenomena that can induce, restrain or constrain motion of parts. The long process of understanding and formulating the physics of multi-body motions, in some cases with pioneering contributions centuries old, together with continual refinements in numerical techniques and enhanced computing power has resulted in the solution of quite complex and practical engineering problems. Linking the historical developments to the fundamental physical phenomena and their interactions, the paper presents solutions to two complex multi-body dynamic problems. The practical implications of the approach in design of these systems are highlighted.

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Jin, Kun Feng, and Ting Qiang Yao. "Multi-Body Contact Dynamics Analysis of Angular Contact Ball Bearing." Applied Mechanics and Materials 444-445 (October 2013): 45–49. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.45.

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The 3-D multi-body contact dynamics simulation model was built by ADAMS base on the Hertz contact theory and multi-body contact dynamics, which considered the dynamics relationship among the ball, ring and cage of the bearing. Considering the clearancesfrictions and loads, results that contained deformation and displacement of the bearing, trajectory of the CM of the cage and the dynamic contact force were obtained by means of the 3-D multi-body contact dynamics model simulation and statics calculation. The outcomes got from two different methods are consistent, so the 3-D multi-body contact dynamics simulation model has the positive significance on dynamic design and engineering application of the bearing.

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Du, Nei Juan, Yue Guo Shen, and Jun Hai Zhang. "The Dynamic Response Analysis of the Multi-Body System with Floating Base Based on the ADAMS." Applied Mechanics and Materials 574 (July 2014): 58–61. http://dx.doi.org/10.4028/www.scientific.net/amm.574.58.

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The dynamic response analysis of the multi-body system with floating base includes the interaction between bodies and flow field as well as the one inside the multi-body system, which needs to use both the time-domain theory about the interaction between the object and the flow field and the method of multi-body system dynamics. With the growing complexity of the upper body, the multi-body system with floating base, whose generalized modeling and analysis become an inevitable trend.Using ADAMS(Automatic Dynamic Analysis of Mechanical System) for multi-body system dynamics analysis has unique advantages. It integrates modeling, solving and visualization technology. It also can realize automatically statics, kinematics and dynamics analysis. In this paper, the feasibility of ADAMS software and some related key issues are discussed, including the system architecture, fluid force analysis, fluid-structure coupling calculation module and ADAMS multi-body dynamics analysis module of data generation and transmission, etc.

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Siano, D., and R. Citarella. "Elastic Multi Body Simulation of a Multi-Cylinder Engine." Open Mechanical Engineering Journal 8, no. 1 (June 13, 2014): 157–69. http://dx.doi.org/10.2174/1874155x01408010157.

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This paper analyzes the vibration behavior of an in-line 4-cylinder, 4-strokes, internal combustion turbocharged direct injection gasoline engine. A detailed multi-body numerical model of the engine prototype was used to characterize the whole engine dynamic behavior, in terms of forces and velocities. The crank train multi-body model was created starting from engine geometrical data, and the available combustion loads were employed for the Multi-Body Dynamic Simulation (MBDS). A combined usage of FEM and multi body methodologies were adopted for the dynamic analysis: both crankshaft and cylinder block were considered as flexible bodies, whereas all the other components were considered as rigid. The engine mounts were considered as flexible elements with given stiffness and damping. The hydrodynamic bearings were also modelling. The software LMS Virtual Lab (modules PDS and Motion) and ANSYS were used for the simulation.

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Huang, Qing, Zhi Li, and Hong-qian Xue. "Multi-body dynamics co-simulation of hoisting wire rope." Journal of Strain Analysis for Engineering Design 53, no. 1 (December 6, 2017): 36–45. http://dx.doi.org/10.1177/0309324717744146.

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As more wire ropes with complex construction are used in the hoisting system of a crane, it becomes more necessary to predict the risks of the hoisting operation. Especially the wire rope, dynamic analysis is required to manage the potential risk in advance. Thus, in this article, a co-simulation method based on multi-body dynamics and finite element method is proposed to determine the dynamic responses of a hoisting system and wire rope. We developed a dynamic model of hoisting system based on ADAMS/Cable to formulate the time history response of dynamic force on wire rope, which could be used as the loading condition in the posterior finite element model. A three-dimensional geometric model for the multi-layered strands wire rope with a construction of 1+7+7 / 7+14 wires is implemented in the finite element analysis software ABAQUS, and both static and dynamic analyses are presented. The static analysis result of force–strain relation is compared with several experiment data, and the finite element model is proved accurate and reliable. In the latter case, the force–time curves obtained by dynamic model are imported to finite element model as loading condition to accomplish dynamic analysis. The co-simulation results of hoisting wire rope’s behavior subjected to dynamic loading during the hoisting process are carried out and discussed. The stress distribution and stress spectrum of wire rope are obtained, and the results show that the most dangerous regions are the lateral side of wire rope, especially the contact area of two wires in strands.

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8

Hale-Heighway, B., S. Douglas, M. Gilmartin, and C. Murray. "Multi-body dynamic modelling of commercial vehicles." Computing & Control Engineering Journal 13, no. 1 (February 1, 2002): 11–15. http://dx.doi.org/10.1049/cce:20020102.

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9

Callegari, M., F. Cannella, and G. Ferri. "Multi-body modelling of timing belt dynamics." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 217, no. 1 (March 1, 2003): 63–75. http://dx.doi.org/10.1243/146441903763049450.

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Although timing belt drives have recently been increasingly used in mechanical design, their behaviour is still considered to a large extent to be unpredictable, especially under varying operative conditions. The acoustic emission of the transmissions, above all, has been thoroughly investigated in past years, but noise still represents an unresolved problem for many applications and a concern for belt designers; therefore, the availability of good predictive models would be very useful for both design and application phases. The present work describes a multi-body numerical model that has been developed for the characterization of the dynamic behaviour of timing belt transmissions, with the final goal of assessing the acoustic radiation of a given design. Modelling and simulation have been performed by means of commercial software packages, but more additional programming was required to obtain dynamic models capable of simulating the complex behaviour of toothed belt transmissions. Several experimental tests have been performed to identify the many parameters that influence system dynamics and to validate the resulting computer aided engineering (CAE) model.

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10

Ni, Hong, Li Xing Sun, and Zhi Xuan Zhang. "The Computational Multi-Body Dynamics for Motorcycle on its Oscillation Properties." Applied Mechanics and Materials 373-375 (August 2013): 76–83. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.76.

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Based on 3D digital model of motorcycle constructed in UGNX, motorcycle multi-body model was established for dynamic behavior analysis under inbuilt assembling of coefficient matrix of dynamical equation in computation code of ADAMS. Through the comparison of simulation analysis for dynamics of different models in accelerations in time and frequency domains, it is concluded that realistic multi-body model better represents the dynamic behavior of motorcycle while simplified one with less physical parameters only provides qualitative analysis for the dynamic behavior. The simulation results shows that model IV with accurate parameters of components influences the dynamic response of frame, simplified models could not represent the influence of mass and inertia moment of subsystems on dynamic behavior, which means advanced motorcycle multi-body improves simulation effectiveness and approximates the dynamic behavior of motorcycle well so that the simulation developed to replace experiments in bad working conditions will promote the advancement of engineering.

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Cai, Meng, and Liang Gu. "Heavy-Duty Car Multi-Body Dynamics Simulation and Optimization Research." Advanced Materials Research 950 (June 2014): 275–80. http://dx.doi.org/10.4028/www.scientific.net/amr.950.275.

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TIn this paper, according to the structure characteristics and using characteristics of heavy duty truck, we use the principle of vehicle dynamics and simulation analysis method to deeply study the dynamic characteristics of heavy duty truck. And we also use the heavy duty model to carry on the optimization simulation and experimental validation for riding smoothness and handling stability. So as to guide the development and design of heavy duty truck, to get the purpose of control the dynamic performance and shorten the development cycle.

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Wang, Ran Ran, Yan Ming Xu, and Xian Bin Teng. "Multi-Body Dynamics Analysis of V-Type Diesel Engine Crankshaft." Advanced Materials Research 988 (July 2014): 617–20. http://dx.doi.org/10.4028/www.scientific.net/amr.988.617.

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Based on the V-type diesel engine crankshaft system, the paper combined the finite element method (fem) and multi-body dynamics method together, made a virtual simulation analysis. First, by 3d software and finite element software to establish the multi-body dynamic models of the crankshaft, bearing and piston, then simulated the actual engine working condition, and got the data such as crankshaft acceleration, velocity and displacement by the multi-body dynamics simulation analysis. By calculation, the paper found that by using the combination of finite element and multi-body simulation method, can we effectively simulate the diesel engine crankshaft dynamics characteristics.

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안기원, HWANGWONGUL, and 성원석. "Dynamic Stress Analysis of Cranktrain Using Flexible Multi-Body Dynamic Model." Journal of the Korean Society of Mechanical Technology 12, no. 4 (December 2010): 67–74. http://dx.doi.org/10.17958/ksmt.12.4.201012.67.

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14

Davison, P., D. K. Longmore, and C. R. Burrows. "Dynamic Analysis of Flexible Multi-Body Mechanical Systems." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 210, no. 4 (July 1996): 309–16. http://dx.doi.org/10.1243/pime_proc_1996_210_203_02.

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The use of only the free component modes as coordinates when computing the motion of mechanisms involving flexible component structures connected together by driven or undriven joints has been further developed, with the constraint errors being controlled by penalty parameters related to both the errors and their time rate of change. Symbolic computation is used to incorporate the constraint equations into the solution program. The degenerate rigid-body modes may be indefinitely large, with Euler parameters being used for rotation, but the other free modes of the individual components, which involve structural deformation, are assumed small. The approach is examined in two examples in which the computed results are compared with experimental measurements.

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15

Sun, L., R. Eatock Taylor, and Y. S. Choo. "Multi-body dynamic analysis of float-over installations." Ocean Engineering 51 (September 2012): 1–15. http://dx.doi.org/10.1016/j.oceaneng.2012.05.017.

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16

Han, Bing, Zhenxun Gao, and Chongwen Jiang. "Numerical simulation of dynamic multi-body separation flowfields." Journal of Physics: Conference Series 1509 (April 2020): 012023. http://dx.doi.org/10.1088/1742-6596/1509/1/012023.

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17

Feng, Zengming, junlong Li, Yabing Cheng, and Zhang Lei. "58794 MULTI-BODY DYNAMIC MODELING AND ANALYSIS OF LIFE-UP FIRE ENGINE(Multibody System Analysis)." Proceedings of the Asian Conference on Multibody Dynamics 2010.5 (2010): _58794–1_—_58794–5_. http://dx.doi.org/10.1299/jsmeacmd.2010.5._58794-1_.

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18

Liu, Na, Guo Xiang Li, Shuai Guo Lang, Yu Ping Hu, and Xiao Ri Liu. "Fatigue Strength Analysis of Internal Combustion Engine Crankshaft Based on Dynamic Simulation." Advanced Materials Research 442 (January 2012): 281–85. http://dx.doi.org/10.4028/www.scientific.net/amr.442.281.

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This paper established multi-body dynamic model of block-crankshaft system by method of finite element substructure and multi-body dynamics, and carried out the distribution of dynamic stress acting on the crankshaft in a working cycle and on this basis carried out the fatigue strength analysis, then received the fatigue safety coefficient and fatigue life data of each part of the crankshaft.

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19

Tan, Xin, Yao Li, and Jun Jie Yang. "The Dynamics Analysis of a Multi-Stage Hybrid Planetary Gearing." Advanced Materials Research 538-541 (June 2012): 2631–35. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2631.

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This paper introduces a complex multi-body dynamics model which is established to simulate the dynamic behaviors of a multi-stage hybrid planetary gearing based on the finite element method and the software ADAMS. The finite element method is used to introduce deformable ring-gears and sun-gears by using 3D brick units. A whole multi-body dynamics model is established in the software ADAMS. Mesh stiffness variation excitation and gear tooth contact loss are intrinsically considered. A rich spectrum of dynamic phenomena is shown in the multi-stage hybrid planetary gearing. The results show that the static strength of main parts of the gearing is strong enough and the main vibration and noises are excited by the dynamic mesh forces acting on the tooth of planet-gears and ring-gears.

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20

Luo, Hai Tao, Zheng Cang Chen, Yu Quan Leng, and Hong Guang Wang. "Rigid-Flexible Coupling Dynamics Simulation of 3-RPS Parallel Robot Based on ADAMS and ANSYS." Applied Mechanics and Materials 290 (February 2013): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amm.290.91.

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This paper mainly investigated the rigid-flexible dynamics simulation method of multi-body system. The 3-RPS parallel robot dynamics model is created by ADAMS (multi-body dynamics software) and ANSYS (finite element analysis software). In accordance with the flexible-body theory, we analyzed mechanical characteristics of parallel robot with no-load or full-load working condition, and got the deformation of end measuring point, maximum stress position and dynamics stress curve. The analysis method is more intuitional and accurate, and can increase the accuracy of dynamic response analysis of links under the dynamic loads. The simulation results create conditions for structure design and optimization of 3-RPS parallel robot.

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Gao, Qin He, and Xiang Yang Li. "Research on Dynamic Modelling and Simulation of Erection System of Mobile Equipment in Absolute Coordinates." Applied Mechanics and Materials 66-68 (July 2011): 2034–40. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.2034.

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This paper employed the theories of multibody system dynamics to analyze the multi-rigid-body model of erection system and build the general dynamic models in absolute coordinates. The impact theory of contact mechanics and nonlinear spring-damper force function were used to model the impact problems between rods of multi-stage hydraulic cylinder of erection system and educe the dynamic models of multi-rigid-body erection system with impact. An automatic violation correction method according to the step of integration time was given to solve the violation which is an incident problem in numerical integration of dynamic models in absolute coordinates. Simulation results show that these dynamic models are effective.

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22

Hwang, Yunn-Lin, and Van-Thuan Truong. "Dynamic Analysis and Control of Multi-Body Manufacturing Systems Based on Newton–Euler Formulation." International Journal of Computational Methods 12, no. 02 (March 2015): 1550007. http://dx.doi.org/10.1142/s0219876215500073.

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This paper presents the numerical dynamic analysis and control of multi-body manufacturing systems based on Newton–Euler formulation. The models of systems built with dynamical parameters are executed. The research uses Newton–Euler formulation application in mechanics calculations, where relations between contiguous bodies through joints as well as their constrained equations are considered. The kinematics and dynamics are both analyzed and acquired by practical applications. Numerical tools help to determine all dynamic characteristics of multi-body manufacturing systems such as displacements, velocities, accelerations and reaction forces of bodies and joints. Using the acquisition, the dynamic approach of multi-body manufacturing systems is developed then whole fundamentals for controller tuning are obtained. It leads to an effective solution for mechanical manufacturing system investigation. Numerical examples are also presented as the illustrations in this paper. The numerical results imply that numerical equations based on Newton–Euler algorithm are valuable in multi-body manufacturing system. It is an effective approach for solving whole mechatronic manufacturing systems including structures, kinematics, dynamics and control.

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23

Liu, Yong Jun, Hong Sheng Ding, Tie Fu, Qiang Jia, and Meng Wang. "Dynamics Analysis and Simulation of the 6-UPS Parallel Stabilizing Platform." Applied Mechanics and Materials 556-562 (May 2014): 4297–302. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.4297.

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Taking the parallel stabilizing platform based on 6-UPS structure as the research object, we deduced the multi-rigid-body dynamics modeling process by using the Lagrange method, and finished the dynamic response analysis of the platform. Then we conducted the collaborative modeling and simulation of the coupled dynamics analysis of the platform with ProE, ANSYS and ADAMS. The results indicate the correctness of the theoretical derivation of the multi-rigid-body dynamic model and the feasibility and necessity of collaborative simulation of the coupled dynamic model, which lay a foundation for further optimization design and practical application of the parallel platform.

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Zhang, Weixin, Ye Li, Yulei Liao, Qi Jia, and Kaiwen Pan. "Hydrodynamic Analysis of Self-Propulsion Performance of Wave-Driven Catamaran." Journal of Marine Science and Engineering 9, no. 11 (November 5, 2021): 1221. http://dx.doi.org/10.3390/jmse9111221.

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The wave-driven catamaran is a small surface vehicle driven by ocean waves. It consists of a hull and hydrofoils, and has a multi-body dynamic structure. The process of moving from static state to autonomous navigation driven by ocean waves is called “self-propulsion”, and reflects the ability of the wave-driven catamaran to absorb oceanic wave energy. Considering the importance of the design of the wave-driven catamaran, its self-propulsion performance should be comprehensively analysed. However, the wave-driven catamaran’s multi-body dynamic structure, unpredictable dynamic and kinematic responses driven by waves make it difficult to analyse its self-propulsion performance. In this paper, firstly, a multi-body dynamic model is established for wave-driven catamaran. Secondly, a two-phase numerical flow field containing water and air is established. Thirdly, a numerical simulation method for the self-propulsion process of the wave-driven catamaran is proposed by combining the multi-body dynamic model with a numerical flow field. Through numerical simulation, the hydrodynamic response, including the thrust of the hydrofoils, the resistance of the hull and the sailing velocity of the wave-driven catamaran are identified and comprehensively analysed. Lastly, the accuracy of the numerical simulation results is verified through a self-propulsion test in a towing tank. In contrast with previous research, this method combines multi-body dynamics with computational fluid dynamics (CFD) to avoid errors caused by artificially setting the motion mode of the catamaran, and calculates the real velocity of the catamaran.

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He, Kongde, Fadzi Ali, and Borihan Md. "Displacement Reliability Analysis of Submerged Multi-body Structure’s Floating Body for Connection Gaps." Open Physics 17, no. 1 (June 15, 2019): 281–90. http://dx.doi.org/10.1515/phys-2019-0029.

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AbstractAiming at the problem of systems’ dynamic characteristics’ randomness caused by connection gaps of submerged multi-body structures, a stochastic and uncertainty dynamical model were formulated for connection gaps and dynamic elongation of mooring cables. This model considered sag effect caused by light, soft and low damping characteristics of mooring cables and their dynamic elongation under the impact of flow field and connection gaps. The equivalent elastic modulus method was used to modify the sag effect. The Newmark-β method was used to solve the problem. Calculation results showed that the average value and peak value of floating body displacement caused by uncertainty of gap contact states are larger than those of ideal articulated states. The reliability of floating body’s displacement with gap contact will be reduced to different extents and the reliability of displacement in velocity direction changes greatly, especially perpendicular to flow field. When studying multi-body structures, randomness of contact state should be considered to reduce the dispersion of clearance and improve dynamic performance.

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Li, D. X., W. Liu, Y. J. Lei, and X. Y. Sun. "Dynamic model for large multi-flexible-body space structures." International Journal of Structural Stability and Dynamics 14, no. 03 (February 16, 2014): 1350072. http://dx.doi.org/10.1142/s0219455413500727.

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Large multi-flexible-body space structures, such as space solar arrays, comprise of multiple flexible substructures that are connected by joint hinges. Unlike traditional continuous structural models, a noncontinuous multi-flexible-body structural model with joint hinges is set up for the multi-flexible-body structure herein. In contrast to the general multi-body structural models in which each substructure is taken as a rigid body, the elastic deformation of every substructure in the multi-flexible-body structural model is taken into account. Furthermore, the connection stiffness and friction damping of joint hinges are considered as they affect the structural dynamic properties. All of the aforementioned considerations make the dynamic modeling of this multi-flexible-body structural system rather difficult. To solve the problem, an innovative semi-analytical model is developed for each flexible substructure. A four-node massless spring-damper element is built up for each joint hinge, in which the stiffness and damping coefficients of the hinge are calibrated by experiments. By comparing the computed results with experimental results, it can be concluded that the method proposed herein is correct and efficient.

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Xue, Zhanpu, Hao Zhang, Hongtao Li, Yunguang Ji, and Zhiqiang Zhou. "Dynamic Analysis of a Flexible Multi-Body in 5 MW Wind Turbine." Shock and Vibration 2022 (October 17, 2022): 1–10. http://dx.doi.org/10.1155/2022/6883663.

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Flexible multi-body dynamics of wind turbines is a subfield of structural mechanics that mainly studies the response of the coupling structure under dynamic loading, such as the transient changes of displacement and stress, in order to measure the load carrying capacity of the coupling structure and obtain the corresponding dynamic properties. Structural dynamics takes into account not only the damping and inertia forces generated by the vibration of the structure but also the elastic force generated by the deformation of the structure. With the continuous increase of individual power and tower height, the flexibility of the multi-body system of wind turbines also increases. The study of the influence of structural parameters on the coupled structural vibrations of tower blades of large wind turbines can provide a scientific basis for the flexible design of large wind turbines as well as important theoretical support for their safe, stable, and economic operation.

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Mousaviraad, Maysam, Michael Conger, Shanti Bhushan, Frederick Stern, Andrew Peterson, and Mehdi Ahmadian. "Coupled computational fluid and multi-body dynamics suspension boat modeling." Journal of Vibration and Control 24, no. 18 (August 9, 2017): 4260–81. http://dx.doi.org/10.1177/1077546317722897.

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Multiphysics modeling, code development, and validation by full-scale experiments is presented for hydrodynamic/suspension-dynamic interactions of a novel ocean vehicle, the Wave Adaptive Modular Vessel (WAM-V). The boat is a pontoon catamaran with hinged engine pods and elevated payload supported by suspension and articulation systems. Computational fluid dynamics models specific to WAM-V are developed which include hinged pod dynamics, water-jet propulsion modeling, and immersed boundary method for flow in the gap between pontoon and pod. Multi-body dynamics modeling for the suspension and upper-structure dynamic is developed in MATLAB Simulink. Coupled equations of motion are developed and solved iteratively through either one-way or two-way coupling methods to converge on flow-field, pontoon motions, pod motions, waterjet forces, and suspension motions. Validation experiments include cylinder drop with suspended mass and 33-feet WAM-V sea-trials in calm water and waves. Computational results show that two-way coupling is necessary to capture the physics of the interactions. The experimental trends are predicted well and errors are mostly comparable to those for rigid boats, however, in some cases the errors are larger, which is expected due to the complexity of the current studies. Ride quality analyses show that WAM-V suspension is effective in reducing payload vertical accelerations in waves by 73% compared to the same boat with rigid upper-structure.

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Zhao, Chang Li. "Simulation on the Vehicle Frontal Collision Based on the PC-Crash." Advanced Materials Research 940 (June 2014): 103–7. http://dx.doi.org/10.4028/www.scientific.net/amr.940.103.

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The probability of frontal collision is the highest in the vehicle collision accidents, and crew injury mechanism of frontal collision is an attractive research subject. Based on the multi-rigid-body dynamics, a “vehicle-crew-belt” dynamics model is introduced, and software Pc-crash is used to simulate dynamic responses of this multi-rigid-body model by referencing basic parameters of FMVSS law. Dynamic response characteristics between the vehicle and the crew body are analyzed so as to expound the link between the vehicle movement and human-body injury. The result shows that a reliable evaluation of frontal collision is achieved, which provides a theory basic and practical reference for the research of accident injury.

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Wang, Li Hua, An Ning Huang, and Guang Wei Liu. "Analysis on Critical Speeds of the Rail Vehicle Based on SIMPACK." Advanced Materials Research 694-697 (May 2013): 69–72. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.69.

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Critical speeds are the important indicators when evaluating the dynamic performance of the rail vehicle. In this paper, the whole multi-body dynamic model of the rail vehicle was proposed based on the theory of multi-body dynamics in the software of Simpack. And the linear and nonlinear critical speeds of the whole rail vehicle inspirited by the track spectrum were simulated. This will provide a basis for analyzing on the whole rail vehicle.

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Guo, Jie. "Simulation and Study on Ride Comfort of Articulated Dump Truck Based on Rigid-Flex Coupling." Applied Mechanics and Materials 494-495 (February 2014): 55–58. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.55.

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For the poor ride comfort performance of the articulated dump truck, the dynamic model of ADT was built and its dynamic characteristics were also studied through finite element and multi-body system dynamic theory. According to the modal neutral file generated by finite element software with the flexible processing, the flexible coupling virtual prototyping model was set up for the multi-body dynamics simulation in ADAMS to obtain and analyze the data about the ADT ride comfort. This paper provided references for the design, redesign and optimization of the ADT.

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Kim, Tae-Jin, Byung-Jin Kim, Seung-Oh Kim, Je-Hong Min, and Jin-Tai Chung. "Dynamic Analysis of a Washing Machine Using a Multi-body Dynamic Model." Transactions of the Korean Society for Noise and Vibration Engineering 22, no. 1 (January 20, 2012): 88–93. http://dx.doi.org/10.5050/ksnve.2012.22.1.088.

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Lee, Jun Young, Moon Young Kim, Ji Youn Lim, Chang Hwan Kim, and Hong Jae Yim. "Dynamic Stiffness Design of Inspection Robot Frame Using Multi-body Dynamic Simulation." Transactions of the Korean Society for Noise and Vibration Engineering 25, no. 3 (March 20, 2015): 169–75. http://dx.doi.org/10.5050/ksnve.2015.25.3.169.

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Liu, Yi, Guo Ding Chen, Ji Shun Li, and Yu Jun Xue. "Flexible Multibody Simulation Approach in the Analysis of Friction Winder." Advanced Materials Research 97-101 (March 2010): 2594–97. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2594.

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The main objective of this study was to model and simulate a multi-flexible-body three-dimensional model for researching the Multi – rope Friction Winder system. By introducing the multi-flexible-body dynamics method, a multi-flexible-body virtual prototype of the winder is been builded with the RecurDyn software package. Kinematics and dynamics characteristic date are obtained by computer-aided dynamic simulation of virtual Multi – rope friction winder. The result is in accord with theoretical analysis. The research work will provide a powerful tool and useful method for the design of economic and credible elevator system. The approach can be generalized to analysis other flexible drive fields.

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Wu, Han, Zhengping Wang, Zhou Zhou, and Rui Wang. "Modeling and Simulation for Multi-Rotor Fixed-Wing UAV Based on Multibody Dynamics." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 5 (October 2019): 928–34. http://dx.doi.org/10.1051/jnwpu/20193750928.

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Accurate dynamic modeling lays foundation for design and control of UAV. The dynamic model for the multi-rotor fixed-wing UAV was looked into and it was divided into fuselage, air-body, multi-rotors, vertical fin, vertical tail and control surfaces, based on the multibody dynamics. The force and moment model for each body was established and derived into the Lagrange equation of the second king by virtual work. By electing quaternion as generalized coordinate and introducing Lagrangian multiplier, the dynamic modeling was deduced and established. Finally, the comparison between the simulation results and the experimental can be found that the present dynamic model accurately describes the process of dynamic change of this UAV and lay foundation for the control of UAV.

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Guo, Yongbo, and Fansheng Wang. "Multi Body Dynamic Equations of Belt Conveyor and the Reasonable Starting Mode." Symmetry 12, no. 9 (September 10, 2020): 1489. http://dx.doi.org/10.3390/sym12091489.

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Based on the rigid finite element method and multibody dynamics, a discrete model of a flexible conveyor belt considering the material viscoelasticity is established. RFE (rigid finite element) and SDE (spring damping element) are used to describe the rigidity and flexibility of a conveyor belt. The dynamic differential equations of the RFE are derived by using Lagrange’s equation of the second kind of the non-conservative system. The generalized elastic potential capacity and generalized dissipation force of the SDE are considered. The forward recursive formula is used to construct the conveyor belt model. The validity of dynamic equations of conveyor belt is verified by field test. The starting mode of the conveyor is simulated by the model.

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Wang, Junguo, Daoping Gong, Rui Sun, and Yongxiang Zhao. "Dynamic Performance of High-Speed Electric Multiple Unit within Multi-Body System Simulation." Recent Patents on Mechanical Engineering 12, no. 4 (December 26, 2019): 339–49. http://dx.doi.org/10.2174/2666145412666190923104415.

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Background: With the rapid development of the high-speed railway, the dynamic performance such as running stability and safety of the high-speed train is increasingly important. This paper focuses on the dynamic performance of high-speed Electric Multiple Unit (EMU), especially the dynamic characteristics of the bogie frame and car body. Various patents have been discussed in this article. Objective: To develop the Multi-Body System (MBS) model of EMU, verify whether the dynamic performance meets the actual operation requirements, and provide some useful information for dynamics and structural design of the proposed EMU. Methods: According to the technical characteristics of a typical EMU, a MBS model is established via SIMPACK, and the measured data of China high-speed railway is taken as the excitation of track random irregularity. To test the dynamic performance of the EMU, including the stability and safety, some evaluation indexes such as wheel-axle lateral forces, wheel-axle lateral vertical forces, derailment coefficients and wheel unloading rates are also calculated and analyzed in detail. Results: The MBS model of EMU has better dynamic performance especially curving performance, and some evaluation indexes of the stability and safety have also reached China’s high-speed railway standards. Conclusion: The effectiveness of the proposed MBS model is verified, and the dynamic performance of the MBS model can meet the design requirements of high-speed EMU.

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Wen, Hao, Hexiong Zhou, Jian Fu, Xu Zhang, Baoheng Yao, and Lian Lian. "Multi-body coupled dynamic modelling of the Wave Glider." Ocean Engineering 257 (August 2022): 111499. http://dx.doi.org/10.1016/j.oceaneng.2022.111499.

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Lengagne, Sébastien, Joris Vaillant, Eiichi Yoshida, and Abderrahmane Kheddar. "Generation of whole-body optimal dynamic multi-contact motions." International Journal of Robotics Research 32, no. 9-10 (April 18, 2013): 1104–19. http://dx.doi.org/10.1177/0278364913478990.

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Trinkle, J. C., J. A. Tzitzouris, and J. S. Pang. "Dynamic multi-rigid-body systems with concurrent distributed contacts." Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 359, no. 1789 (December 15, 2001): 2575–93. http://dx.doi.org/10.1098/rsta.2001.0911.

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van Roy, Stephane, Francois Quitin, LingFeng Liu, Claude Oestges, Francois Horlin, Jean-Michel Dricot, and Philippe De Doncker. "Dynamic Channel Modeling for Multi-Sensor Body Area Networks." IEEE Transactions on Antennas and Propagation 61, no. 4 (April 2013): 2200–2208. http://dx.doi.org/10.1109/tap.2012.2231917.

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Agrawal, Om P., and Sunil Saigal. "Dynamic analysis of multi-body systems using tangent coordinates." Computers & Structures 31, no. 3 (January 1989): 349–55. http://dx.doi.org/10.1016/0045-7949(89)90382-9.

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Greco, M., and H. B. Coda. "Positional FEM formulation for flexible multi-body dynamic analysis." Journal of Sound and Vibration 290, no. 3-5 (March 2006): 1141–74. http://dx.doi.org/10.1016/j.jsv.2005.05.018.

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Choi, Dong Hwan, Se Jeong Lee, and Hong Hee Yoo. "Dynamic analysis of multi-body systems considering probabilistic properties." Journal of Mechanical Science and Technology 19, S1 (January 2005): 350–56. http://dx.doi.org/10.1007/bf02916154.

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Han, H. S. "Web-based dynamic simulation system for multi-body systems." Advances in Engineering Software 35, no. 2 (February 2004): 75–84. http://dx.doi.org/10.1016/j.advengsoft.2003.10.003.

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Banerjee, A. K., and M. E. Lemak. "Multi-Flexible Body Dynamics Capturing Motion-Induced Stiffness." Journal of Applied Mechanics 58, no. 3 (September 1, 1991): 766–75. http://dx.doi.org/10.1115/1.2897262.

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This paper presents a multi-flexible-body dynamics formulation incorporating a recently developed theory for capturing motion-induced stiffness for an arbitrary structure undergoing large rotation and translation accompanied by small vibrations. In essence, the method consists of correcting dynamical equations for an arbitrary flexible body, unavoidably linearized prematurely in modal coordinates, with generalized active forces due to geometric stiffness corresponding to a system of 12 inertia forces and 9 inertia couples distributed over the body. Computation of geometric stiffness in this way does not require any iterative update. Equations of motion are derived by means of Kane’s method. A treatment is given for handling prescribed motions and calculating interaction forces. Results of simulations of motions of three flexible spacecraft, involving stiffening during spinup motion, dynamic buckling, and a slewing maneuver, demonstrate the validity and generality of the theory.

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Chen, Tian Li, Jing Zeng, Yao Hui Lu, and Li Min Zhang. "Vibration Transfer Analysis of High Speed Train Considering Car body Flexibility." Advanced Materials Research 605-607 (December 2012): 1168–71. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1168.

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In order to research the influence of the flexible car body on the vehicle system dynamic performance and to achieve the reasonable match between high speed and lightweight，it is necessary to build vehicle system dynamic model with the rigid car body replaced by the flexible car body. Due to the lower structure natural vibration frequency of car body, the influence of carbody flexibility on vehicle system dynamic performance is more influential. The influences of structural vibration of car body on vehicle system dynamics performance were studied by finite element analysis (FEA) method and multi-body system (MBS) dynamics theory. Rigid-flexible coupled vehicle system dynamic models were built up and the car body key location’s vibration was analyzed through vibration transmission chain. The results show that the influences of high speed carbody structure vibration on vehicle system dynamics performance are distinguished especially in the domain of car body natural vibration frequency.

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Wang, Song, Da Wei Liu, and Wei Liu. "Simulation Analysis on Ride Comfort of Heavy Vehicle." Applied Mechanics and Materials 339 (July 2013): 425–29. http://dx.doi.org/10.4028/www.scientific.net/amm.339.425.

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In this paper, a detailed rigid-flexible coupling multi-body dynamic model of heavy vehicle was established using multi-body dynamics method, and B class road model was built using harmonic superposition method. Then, the platform of heavy vehicle dynamics simulation was established. The driver seat acceleration and tire dynamic load were simulated at different speeds under the input of different random road excitations. According to the ride comfort evaluation method provided by ISO2631-1, total weighted root-mean-square (RMS) acceleration evaluation method was used to evaluate the ride comfort of heavy vehicle at different ride speeds.

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Qin, W. J., and J. Q. He. "Optimum Design of Local Cam Profile of a Valve Train." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 11 (May 14, 2010): 2487–92. http://dx.doi.org/10.1243/09544062jmes2116.

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In this paper, optimization of the local cam profile of a valve train modelled by a parameterized Bezier curve is described. Dynamic responses of the valve train are simulated through its multi-body system dynamics model built using ADAMS software. The kriging method is used to build the surrogate model, which presents the relationship between dynamic responses resulting from the multi-body system dynamics simulation and the parameters of the local Bezier profile. The local cam profile is optimized through a generic algorithm, such that the acceleration peak at the valve open phase is reduced significantly.

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Sun, Wei Fang, Xiang Zhou Zheng, and Jing Rui Liang. "Dynamics of Flexible Slider-Crank Mechanism Based on the Floating Frame Reference Formulation." Applied Mechanics and Materials 456 (October 2013): 330–33. http://dx.doi.org/10.4028/www.scientific.net/amm.456.330.

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The slider-crank mechanism is a special case of the four bar linkage which is widely used in reciprocating machines. Flexible multi-body mechanisms that gain some motion through the deflection of flexible elements are classified as compliant mechanisms. Dynamics of flexible slider-crank mechanisms is presented in this paper. Both rigid and flexible parts are included in the slider-crank mechanisms. As one of the widely accepted dynamic analytical method for the multi-body system modeling, floating frame reference formulation has been applied to derive dynamic formulations. Simulations of dynamics of flexible slider-crank mechanisms have been carried out using Matlab. It was shown that flexibility of parts has a certain extent effects on mechanical properties of flexible system that disagree with that of rigid ones. Keywords: Floating frame reference formulation; Slider-crank; Deformation; Flexible multi-body

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