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
SN - 0160-8835
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
ER -