3D Connexion Version 6.6

*USER MATERIAL

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

a thermal constitutive model is used and is not symmetric. This parameter causes

ABAQUS/Standard to use its unsymmetric equation solutionprocedures.

Data lines to deﬁne material constants:

First line:

1. Givethe material constants, eight per line.

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

20.6–2

ABAQUS Version 6.1 Module: ID:

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