ENDOCHRONIC CONSTITUTIVE MODELING OF FINITE DEFORMATION PLASTICITY AND CREEP: A FIELD-BOUNDARY ELEMENT COMPUTATIONAL ALGORITHM.

Research output: Contribution to journalConference article

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Abstract

Constitutive equation for finite deformation deviatoric plasticity and creep are considered based upon the internal time (endochronic) concept, and the concept of a material director. For deformations of the type that involve only small elastic strains, the present constitutive equations lead to a flow rule, and an evolution equation for the back stress tensor. In the case of finite deformation rate-independent plasticity, field-bounary element method for determining velocity strains; and a midpoint radial return, objective integration, algorithm for determining the stresses, are presented.

Original languageEnglish
Pages (from-to)41-56
Number of pages16
JournalAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume88
StatePublished - 1987

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