3D Connexion Version 6.6

*MATERIAL

13.5 *MATERIAL: Begin the deﬁnition of a material.

This option is used to indicate the start of a material deﬁnition.

Products: ABAQUS/Standard ABAQUS/Explicit

Type: Model data

Level: Model

Reference:

•“Material data deﬁnition,” Section16.1.2 of the ABAQUS Analysis User ’sManual

Required parameter:

NAME

Set this parameter equal to a label that will be used to refer to the material in the element property

options. Material names inthe same input ﬁle must be unique. Furthermore,ma terial names should

beunique from the names associated with property deﬁnitions such as *CONNECTOR BEHAVIOR

and *FLUID BEHAVIOR.Material names adhere to the naming convention for labels (see “Input

syntaxrules,” Section 1.2.1 of the ABAQUS Analysis User’s Manual), except that they cannot begin

with a number.

Optional parameters:

RTOL

This parameter applies only to ABAQUS/Explicit analyses.

Set this parameter equal to the tolerance to be used for regulariz ing the material data. The

default is RTOL=0.03.

SRATE FACTOR

This parameter applies only to ABAQUS/Explicit analyses.

Set this parameter equal to the factorused for ﬁltering the equivalent plastic strain rate for the

evaluation of strain rate-dependent material data. The default value is 0.9.

STRAIN RATEREGULARIZATION

This parameter applies only to ABAQUS/Explicit analyses and is use d only to regularize strain

rate-dependent material data.

Set STRAIN RATE REGULARIZATION=LOGARITHMIC (default) to use a logarithmic

regularization for strain rate-dependent material data.

13.5–1

ABAQUS Version 6.1 Module: ID:

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