文档介绍：Mechanism and Machine Theory 44 (2009) 1211–1222
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Mechanism and Machine Theory
journal homepage: ate/mechmt
Modeling and simulation of wear in revolute clearance
joints in multibody systems
P. Flores *
Departamento de Engenharia Mecânica, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
article info abstract
Article history: The main goal of this work is to develop a methodology for studying and quantifying the
Received 31 October 2007 wear phenomenon in revolute clearance joints. In the process, a simple model for a revo-
Received in revised form 6 August 2008 lute joint in the framework of multibody systems formulation is presented. The evaluation
Accepted 8 August 2008
of the contact forces developed is based on a continuous contact force model that accounts
Available online 21 September 2008
for the geometrical and materials properties of the colliding bodies. The friction effects due
to the contact in the joints are also represented. Then, these contact-impact forces are used
pute the pressure field at the contact zone, which ultimately is employed to quantify
Keywords:
the wear developed and caused by the relative sliding motion. In this work, the Archard’s
Wear
Clearance joints wear model is used. A simple planar multibody mechanical system is used to perform
Contact–impact numerical simulations, in order to discuss the assumptions and procedures adopted
Multibody dynamics throughout this work. From the main results obtained, it can be drawn that the wear phe-
nomenon is not uniformly distributed around the joint surface, owing to the fact that the
contact between the joint elements is wider and more frequent is some specific regions.
Ó 2008 Elsevier Ltd. All rights reserved.
1. Introduction
It is well known that most of mon mechanical systems include contact and relative motion between the bodies
which, among other phenomena, can be a source of wear. Accordin