Abaqus Volume II: I–Z Manual do Utilizador descarregar pdf (Página 596)

USER MATERIAL

Include this parameter if the material stiffness matrix, , is not symmetric or when

a thermal constitutive model is used and

is not symmetric. This parameter causes

ABAQUS/Standard to use its unsymmetric equation solution procedures.

Data lines to deﬁne material constants:

1. Give the material constants, eight per line.

Repeat this data line as often as necessary to deﬁne all material constants.

ABAQUS Version 6.1 Module:

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Abaqus Volume II: I–Z Manual do Utilizador Página 596