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*POTENTIAL

Define the stress potential of a yield/creep model.

This option is used to define the stress potential for yield and creep behavior. It can be used only in conjunction with material models defined by the following options:

This page discusses:

Optional parameters

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the stress potential coefficients in addition to temperature. If this parameter is omitted, it is assumed that the coefficients are constant or depend only on temperature. See Material Data Definition for more information.

POWER

This parameter applies only to Abaqus/Explicit analyses. It can be used only in conjunction with TYPE=BARLAT, BARLAT91, or HOSFORD.

Set this parameter equal to the exponent in the potential function.

TYPE

This parameter is used to define the stress potential function.

Set TYPE=BARLAT to specify nonquadratic anisotropic yield using the Barlat Yld2004-18p stress potential. This parameter setting is available only in Abaqus/Explicit.

Set TYPE=BARLAT91 to specify nonquadratic anisotropic yield using the Barlat Yld91 stress potential. This parameter setting is available only in Abaqus/Explicit.

Set TYPE=HILL (default) to specify quadratic anisotropic yield using the Hill stress potential.

Set TYPE=HOSFORD to specify nonquadratic isotropic yield using the Hosford criterion. This parameter setting is available only in Abaqus/Explicit.

Set TYPE=TRESCA to specify nonquadratic isotropic yield using the Tresca criterion. This parameter setting is available only in Abaqus/Explicit.

Data lines used to define stress ratios for the Hill stress potential (TYPE=HILL)

Data lines used to define coefficients for the Barlat Yld2004-18p stress potential (TYPE=BARLAT)

Data lines used to define coefficients for the Barlat Yld91 stress potential (TYPE=BARLAT91)

There are no data lines associated with the Hosford stress potential (TYPE=HOSFORD) or the Tresca stress potential (TYPE=TRESCA)