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Evaluation of Contact Force and Elastic Foundation Models for Wear Analysis of Multibody Systems

[+] Author Affiliations
Saad M. Mukras

Qassim University, Buraydah, Qassim, Saudi Arabia

Nam Ho Kim, Tony L. Schmitz, W. Gregory Sawyer

University of Florida, Gainesville, FL

Paper No. DETC2010-28750, pp. 1565-1577; 13 pages
  • ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 34th Annual Mechanisms and Robotics Conference, Parts A and B
  • Montreal, Quebec, Canada, August 15–18, 2010
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4410-6 | eISBN: 978-0-7918-3881-5
  • Copyright © 2010 by ASME


In this paper, two procedures to analyze planar multibody systems experiencing wear at a revolute joint are compared. In both procedures, the revolute joint of interest includes a clearance whose shape and size are dictated by wear. The procedures consist of coupled iterative analyses between a dynamic analysis of the system with non-ideal joints and wear prediction to determine the evolution of the joint clearance. In the first procedure, joint forces and contact pressure are estimated using the elastic foundation model (EFM) with hysteresis damping via the dynamic analysis. In the second procedure, a contact force model with hysteresis damping is used to estimate the joint forces. In the latter case, however, the contact pressure is estimated using a finite element method (FEM). Comparison in performance of the two models is facilitated through the use of an experimental slider-crank mechanism in which wear is permitted to occur at one of the joints. It is observed that the two procedures provide similar estimates for the dynamics response and wear volumes but substantially different predictions on the wear profiles. Additionally, experimental results show that while predictions on the wear volume from both models are reasonably accurate, the FEM-based model produced more accurate predictions on the wear profile.

Copyright © 2010 by ASME



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