Analysis of the Large Plastic Deformation Involved in Wear Processes Using the Finite Element Method With an Updated Lagrangian Formulation

[+] Author and Article Information
Nobuo Ohmae

Osaka University, Suita, Osake 565, Japan

J. Tribol 109(2), 330-337 (Apr 01, 1987) (8 pages) doi:10.1115/1.3261362 History: Received February 21, 1986; Online October 29, 2009


Large plastic deformation caused by friction for high purity copper was investigated using the finite element method with an updated Lagrangian formulation. The phenomenological background of this large plastic deformation was studied with a scanning electron microscope, and the nucleation of voids similar to those obtained for copper rolled to over 50 percent reduction was observed. Void nucleation was found to correlate with the agglomeration of over-saturated vacancies formed under high plastic strains. The computer-simulation analyzed such heavy deformation with an equivalent stress greater than the tensile strength and with an equivalent plastic strain of 0.44. Crack propagation was discussed by computing the J-integrals.

Copyright © 1987 by ASME
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