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RESEARCH PAPERS

An Evaluation of Several Constitutive Model Structures for Transient Nonproportional Cyclic Plasticity

[+] Author and Article Information
W. Sotolongo, D. L. McDowell

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332

J. Pressure Vessel Technol 108(3), 273-279 (Aug 01, 1986) (7 pages) doi:10.1115/1.3264786 History: Received September 17, 1985; Online November 05, 2009

Abstract

Four constitutive models for cyclic plasticity of different essential structure are evaluated under conditions of nonproportional, multiaxial loading. Drucker’s one-surface theory, McDowell’s two-surface theory, Krieg’s one-surface theory with Radial-Return Integration Algorithm, and Abrahamson’s Unified Creep-Plasticity theory are the constitutive models under consideration. Their transient hardening and stable loop responses are compared to experimental data for two nonproportional axial-torsional loading histories. Their computational efficiency is also analyzed.

Copyright © 1986 by ASME
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