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and
Machine Theory
Mechanism and Machine Theory 43 (2008) 1211–1224
ate/mechmt
Stick/slip phenomena in dynamics: Choice of contact model.
Numerical predictions & experiments
E. Chatelet a,*, G. Michon a, L. Manin b, G. Jacquet b
a LaMCoS, INSA-RS UMR5259, F69621, France
b IGM-ISAE, Universite´ de Toulouse, Toulouse F31300, France
Received 29 March 2007; received in revised form 2 November 2007; accepted 4 November 2007
Available online 21 December 2007
Abstract
This paper presents a method for choosing the most appropriate contact model from several models, paring their
efficiency for predicting hysteretic behaviour in different applications. The first part describes an application for a belt ten-
sioner used for automotive engines. The second part concerns an academic application and focuses on a simple case of
vibration in the presence of dry friction. The hysteresis loops obtained at contact locations are usually used to reproduce
the nonlinear forces transmitted along the contact surface as accurately as possible. Although such techniques can be used
when the contact zone is easily accessible, this is not generally possible for real, complex structures. Consequently, different
techniques are developed and validated.
Ó 2007 Elsevier Ltd. All rights reserved.
Keywords: Stick/slip contact; Hysteresis loop; Dahl–macro–microslip models; Nonlinear
1. Introduction
The objective of this work is to improve understanding and modelling of stick/slip phenomena encountered
in different industrial applications. One of the mon failure modes for ponents is
high-cycle fatigue. To avoid high amplitudes and extend the working life of machines, natural frequencies have
to be distinguished from excitation frequencies. However, in practice, real structures are characterized by so
many natural frequencies that it is impossible to eliminate resonance. So, vibratory stresses must to be reduced
by using specific devices. For ex