Static Friction Coefficient Is Not a Material Constant

Oded Ben-David and Jay Fineberg
Phys. Rev. Lett. 106, 254301 – Published 20 June 2011

Abstract

The static friction coefficient between two materials is considered to be a material constant. We present experiments demonstrating that the ratio of shear to normal force needed to move contacting bodies can, instead, vary systematically with controllable changes in the external loading configuration. Large variations in both the friction coefficient and consequent stress drop are tightly linked to changes in the rupture dynamics of the rough interface separating the two bodies.

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  • Received 28 April 2011

DOI:https://doi.org/10.1103/PhysRevLett.106.254301

© 2011 American Physical Society

Authors & Affiliations

Oded Ben-David and Jay Fineberg

  • The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

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Issue

Vol. 106, Iss. 25 — 24 June 2011

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