A Presentation and Comparison of Two Large Deformation Viscoelasticity Models

[+] Author and Article Information
Sanjay Govindjee, Stefanie Reese

Department of Civil Engineering, University of California, Berkeley, CA 94720

J. Eng. Mater. Technol 119(3), 251-255 (Jul 01, 1997) (5 pages) doi:10.1115/1.2812252 History: Received December 20, 1996; Revised April 07, 1997; Online November 27, 2007


In this paper we present a theory of finite deformation viscoelasticity. The presentation is not restricted to small perturbations from the elastic equilibrium in contrast to many viscoelasticity theories. The fundamental hypothesis of our model is the multiplicative viscoelastic decomposition of Sidoroff (1974). This hypothesis is combined with the assumption of a viscoelastic potential to give a model that is formally similar to finite associative elasto-plasticity. Examples are given to compare the present proposal to an alternative formulation in the literature for the cases of uniaxial plane strain relaxation and creep.

Copyright © 1997 by The American Society of Mechanical Engineers
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