J. Phys. II France
Volume 7, Numéro 12, December 1997
Page(s) 1745 - 1751
DOI: 10.1051/jp2:1997213
J. Phys. II France 7 (1997) 1745-1751

Hysteresis and Recovery Length in a Dry Solid Friction Experiment

Jérôme Crassous, Sergio Ciliberto, Elisabeth Charlaix and Claude Laroche

Laboratoire de Physique, École Normale Supérieure de Lyon, 46 allée d'Italie, 69007 Lyon, France

(Received 22 May 1997; revised 1 August 1997; accepted 23 September 1997)

We report an experiment on dry friction between two elastic surfaces made of millimetric steel spheres embedded in an elastic medium. We study the hysteresis cycle of the tangential force induced by a quasi-static cyclic displacement. At low velocities, hysteresis effects are fully characterized by a recovery length comparable to the size of the steel spheres. This length is independent of the velocity and of the normal load. We propose an interpretation for this recovery length with a simple model of discrete contacts.

© Les Editions de Physique 1997