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Title:Nonproportional cyclic plasticity
Author(s):Lamba, Hari S.
Cyclic Nonproportional Strain Histories
Strain Paths
Abstract:Extensive experimental research has been conducted on annealed OFHC copper subjected to cyclic nonproportional strain histories. If the material was dynamically stabilized by uniaxial cycling, a change to nonproportional cycling caused further hardening until the material response continued to be the same (or stable) from cycle to cycle. After attaining stable conditions for one strain path, a cycle whose effective strain amplitude was approximately equal to or greater than those of previous cycles, completely erased the influence of past strain histories. A kinematic hardening incremental plasticity model which combined a Tresca yield surface translating inside a Tresca limit surface according to the Mroz hardening rule was able to predict the most complex experimental stress-strain behavior with great accuracy.
Issue Date:1976-12
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 413
Genre:Technical Report
Sponsor:Army Research Office, Durham, North Carolina DAHC 04 74 G 0050 76/12
Rights Information:Copyright 1976 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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