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A generalized visco-plasticity model and its algorithmic implementation

Auricchio, Ferdinando; Taylor, Robert L.

UCB/SEMM-1993/02, Dept. of Civil Engineering, University of California, Berkeley, 1993-02, 29 pages (500/C23/93/02)

This paper presents a new rate-dependent model, which has the feature of being bounded by two plasticity models. After a brief review of the continuous equations for a material with inelastic behavior governed by a von Mises (J2) yield function, including both linear isotropic and kinematic hardening mechanisms, their discrete counterpart within the framework of a return mapping algorithm is introduced. The new material model, called generalized visco-plasticity, which includes as sub-cases classical visco-plasticity, classical plasticity and generalized plasticity is addressed. Numerical simulations are presented to illustrate the performance of the new material model.

Available online: http://nisee.berkeley.edu/documents/SEMM/SEMM-93-02.pdf (1 MB)