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Optional parameters – ABAQUS Volume II: I–Z User Manual

Page 551

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*TENSILE FAILURE

19.2

*TENSILE FAILURE:

Specify a tensile failure model and criterion.

This option is used with the Mises or the Johnson-Cook plasticity models or the equation of state model
to specify a tensile failure model and criterion.

It must be used in conjunction with the *PLASTIC,

HARDENING=ISOTROPIC option; the *PLASTIC, HARDENING=JOHNSON COOK option; or the
*EOS option.

Product:

ABAQUS/Explicit

Type:

Model data

Level:

Model

References:

“Equation of state,” Section 17.9.1 of the ABAQUS Analysis User’s Manual

“Classical metal plasticity,” Section 18.2.1 of the ABAQUS Analysis User’s Manual

“Johnson-Cook plasticity,” Section 18.2.7 of the ABAQUS Analysis User’s Manual

“Dynamic failure models,” Section 18.2.8 of the ABAQUS Analysis User’s Manual

*EOS

*PLASTIC

Optional parameters:

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of
the hydrostatic cutoff stress, in addition to temperature. If this parameter is omitted, it is assumed
that the hydrostatic cutoff stress is constant or depends only on temperature. See “Using the
DEPENDENCIES parameter to define field variable dependence” in “Material data definition,”
Section 16.1.2 of the ABAQUS Analysis User’s Manual, for more information.

ELEMENT DELETION

Set ELEMENT DELETION=YES (default) to allow element deletion when the failure criterion is
met.

Set ELEMENT DELETION=NO to allow BRITTLE/DUCTILE-type failure for the deviatoric

and hydrostatic parts of stresses.

Required parameters for use with ELEMENT DELETION=NO:

PRESSURE

Set PRESSURE=BRITTLE to model the case where the pressure stress is required to be
compressive when the failure criterion is met.

19.2–1

ABAQUS Version 6.1

Module: ID:

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