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RESEARCH PAPERS

Simulation of Mechanical Systems With Multiple Frictional Contacts

[+] Author and Article Information
Yin-Tien Wang

Department of Mechanical Engineering, Tamkang University, Taipei, Taiwan

V. Kumar

Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA

J. Mech. Des 116(2), 571-580 (Jun 01, 1994) (10 pages) doi:10.1115/1.2919416 History: Received July 01, 1992; Online June 02, 2008

Abstract

There are several engineering applications in which nominally rigid objects are subject to multiple frictional contacts with other objects. In most previous work, rigid body models have been used to analyze such systems. There are two fundamental problems with such an approach. First, the use of frictional laws, such as Coulomb’s law, introduces inconsistencies and ambiguities when used in conjunction with the principles of rigid body dynamics. Second, hypotheses traditionally used to model frictional impacts can lead to solutions which violate principles of energy conservation. In this paper these problems are explained with the help of examples. A new approach to the simulation of mechanical systems with multiple, frictional constraints is proposed that is free of inconsistencies.

Copyright © 1994 by The American Society of Mechanical Engineers
Topics: Simulation
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