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REVIEW ARTICLES

Unified Constitutive Modelling of Nonlinear Time-Dependent Materials

[+] Author and Article Information
P. G. Glockner

Department of Civil Engineering and Department of Mechanical Engineering, The University of Calgary, Calgary, Alberta, Canada

W. Szyszkowski

Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

Appl. Mech. Rev 42(11S), S78-S82 (Nov 01, 1989) doi:10.1115/1.3152411 History: Online June 03, 2009

Abstract

A semi-empirical engineering constitutive law modelling in a unified and continuous manner the main characteristic features of time-dependent materials, including creep, strain softening, relaxation and recovery and tensile brittleness, is briefly reviewed. The model, which contains 13 parameters, is a hereditary single Volterra-type integral representation of material response with stress/strain nonlinearity assumed in the form of a power law, the strain tensor dependent on the entire stress history and the stress-anisotropy/brittleness feature handled by means of a tensile-stress dependent damage function. The capability/versatility of the model is illustrated by examples for several materials.

Copyright © 1989 by The American Society of Mechanical Engineers
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