Symmetric tangential stiffness formulation for non-associated plasticity

A numerical scheme is proposed in which the response of a material with non-associated flow rule is made equivalent to that of a material with associated flow rule and a modified stress/strain direction dependent hardening/softening rule. The scheme has obvious computational advantage since finite e...

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Bibliographic Details
Published inComputers and geotechnics Vol. 2; no. 2; pp. 89 - 99
Main Authors Pande, G.N., Pietruszczak, S.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1986
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Summary:A numerical scheme is proposed in which the response of a material with non-associated flow rule is made equivalent to that of a material with associated flow rule and a modified stress/strain direction dependent hardening/softening rule. The scheme has obvious computational advantage since finite element programs with tangential stiffness formulations can be used without resort to non-symmetric equation solution routines.
ISSN:0266-352X
1873-7633
DOI:10.1016/0266-352X(86)90006-6