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RESEARCH PAPERS

Nonproportional Multiaxial Cyclic Loading: Experiments and Constitute Modeling

[+] Author and Article Information
Z. Xia, F. Ellyin

Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada

J. Appl. Mech 58(2), 317-325 (Jun 01, 1991) (9 pages) doi:10.1115/1.2897188 History: Received September 01, 1989; Revised October 18, 1990; Online March 31, 2008

Abstract

Biaxial tension compression, deformation controlled, out-of-phase cyclic tests were conducted on thin-walled circular cylindrical specimens of a low alloy carbon steel. The influence of strain amplitude and phase angle (a measure of nonproportionality of strain path) on the stress-strain loops have been studied. Material aniostropy and additional cyclic hardening due to the plastic deformation and nonproportional path are clearly observed. A constitutive model is presented which describes the material behavior under complex loading histories including cyclic deformation. The predictions of the model are compared to the experimental results, and the agreement is found to be fairly good.

Copyright © 1991 by The American Society of Mechanical Engineers
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