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TECHNICAL BRIEFS

Viscoplastic Modeling With Strain Rate-History Dependency

[+] Author and Article Information
H. Ghoneim, S. Matsouka

Plastic Research and Development Department, Bell Laboratories, Murray Hill, N.J. 07974

Y. Chen

Department of Mechanics and Materials Science, College of Engineering, Rutgers, The State University of New Jersey, P.O. Box 909, Piscataway, N.J. 08854

J. Appl. Mech 50(2), 465-468 (Jun 01, 1983) (4 pages) doi:10.1115/1.3167066 History: Received June 01, 1982; Revised October 01, 1982; Online July 21, 2009

Abstract

The strain rate-history effect on the plastic behavior of some classes of viscoplastic materials is incorporated into the power formula of Bodner’s model by adopting an integral-memory type equation for the “hardening” state variable. The modified model is incorporated into a finite element program. Results on uniaxial loading-unloading-reloading at different rates as well as jump tests show the capability of this modified model in simulating the strain rate-history effects on the yield stress and the plastic hardening for some viscoplastic materials.

Copyright © 1983 by ASME
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