TY - JOUR

T1 - ENDOCHRONIC CONSTITUTIVE MODELING OF FINITE DEFORMATION PLASTICITY AND CREEP

T2 - A FIELD-BOUNDARY ELEMENT COMPUTATIONAL ALGORITHM.

AU - Im, S.

AU - Atluri, S. N.

PY - 1987

Y1 - 1987

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0023589474&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0023589474

VL - 88

SP - 41

EP - 56

JO - American Society of Mechanical Engineers, Applied Mechanics Division, AMD

JF - American Society of Mechanical Engineers, Applied Mechanics Division, AMD

SN - 0160-8835

ER -