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Massless Links with External Forces and Bushing Effect for Multibody Dynamic Analysis  

Sohn, Jeong-Hyun (Graduate school, Pusan National University)
Yoo, Wan-Suk (School of Mechanical Engineering, Pusan National University)
Hong, Keum-Shik (School of Mechanical Engineering, Pusan National University)
Kim, Kwang-Suk (Department of Automobile Engineering, Inha Technical College)
Publication Information
Journal of Mechanical Science and Technology / v.16, no.6, 2002 , pp. 810-818 More about this Journal
Abstract
When the contribution of lightweight components to the total energy of a system is small, tole inertia effects are sometimes ignored by replacing them to massless links. For example, a revolute-spherical massless link generates two kinematic constraint equations between adjacent bodies and allows four relative degrees of freedom. In this paper, to implement a massless link systematically in a computer program using the velocity transformation technique, the velocity transformation matrix of massless links is derived and numerically implemented. The velocity transformation matrix for a revolute-spherical massless link and a revolute-universal massless link are appeared as a 6$\times$4 matrix and a 6$\times$3 matrix, respectively. A massless link model in a suspension composite joint transmitting external forces is also developed and the numerical efficiency of the proposed model is compared to a conventional multibody model. For a massless link transmitting external forces, forces acting on links are resolved and transmitted to the attached points with a quasi-static assumption. Numerical examples are presented to verify the formulation.
Keywords
Multi-body Dynamics; Massless Link; Velocity Transformation Technique; Simulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Lee, B. H., Yoo, W. S. and Kwak, B. M., 1993, 'A Systematic Formulation for Dynamics of Flexible Multibody Systems using Velocity Transformation Technique,' I Mech E, J. of Mechanical Engineering Science, Vol. 207 (C4), pp. 231-238
2 Meirovitch, L., 1967, Analsys Methods in Vibrations, Macmillan Publishing, New York, pp. 30-37
3 Nikravesh, P. E. and Gim, G., 1993, 'Joint Coordinate Method for Analysis and Design of Multibody Systems : Part 1. System equations,' KSME Journal, 7(1), pp. 14-25   DOI
4 Haug, E. J., 1989, Computer-Aided Kinematics and Dynamics of Mechanical Systems, ALLYN AND BACON, Massachusetts, Volume I, pp. 69-71
5 McCullough, M. K. and Haug, E. J., 1986, 'Dynamics of High Mobility Track Vehicles,' ASME Journal of Mechanism, Transmissions, and Automation in Design (108), pp. 189-196   DOI   ScienceOn
6 Nikravesh, P. E., 1988, Computer-Aided Analysis of Mechanical Systems, Prentice-Hall, New Jersey, pp. 196-199
7 Sohn, J. H. and Choi, S. T., et al, 2001, 'Development of the Massless Link Model including External Force and Bushing Deformation,' KSAE, 9(1), pp. 163-170   과학기술학회마을
8 Blundell, M. V., 1998, 'The Influence on Rubber Bush Compliance on Vehicle Suspension Movement,' Materials and Design, (19), pp. 29-37   DOI   ScienceOn
9 CADSI, 1995, DADS Revision 8.0 User's Manual, Oakdale, IA, U.S.A
10 Kading, R. R. and Vanderploeg, M. J., 1985, Dynamic Analysis of Vehicles Using a Rigid Body Dynamics General Purpose Computer Code, Center for Computer Aided Design, The Univ. of Iowa, Iowa, Technical Report No. 85-6
11 M. D. I, 1994, ADAMS Version 8.0 User's Guide, Ann Arbor, MI, U.S.A.
12 Kim, K. S. and Yoo, W. S. et al, 1999, 'Development of Vehicle Dynamics Program AutoDyn7(1)-Structure and Algorithm,' KSAE, 7(3), pp. 321-330
13 Kim, S. S. and Vanderploeg, M. J., 1986, 'A General and Efficient Method Dynamic Analysis of Mechanical Systems using Velocity Transformations,' ASME Journal of Mechanisms, Transmissions, and Automation in Design, 108(2), pp. 176-182   DOI   ScienceOn