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*FAIL STRESS
Define parameters for stress-based failure measures.

This option is used to define the stress limits for stress-based failure measures. It can be used only in conjunction with the *ELASTIC option.

Products: Abaqus/Standard  Abaqus/Explicit  Abaqus/CAE  

Type: Model data

Level: Model  

Abaqus/CAE: Property module

References:

Optional parameter:

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the failure criteria, in addition to temperature. If this parameter is omitted, it is assumed that the failure criteria depend only on temperature. See “Specifying field variable dependence” in “Material data definition,” Section 21.1.2 of the Abaqus Analysis User's Guide, for more information.

Data lines to define stress-based failure criteria: 

First line:

  1. Tensile stress limit in fiber direction, .

  2. Compressive stress limit in fiber direction, .

  3. Tensile stress limit in transverse direction, .

  4. Compressive stress limit in transverse direction, .

  5. Shear strength in the X–Y plane, S.

  6. Cross product term coefficient, (). This value is used only for the Tsai-Wu theory and is ignored if is given. The default is zero.

  7. Biaxial stress limit, . This value is used only for the Tsai-Wu theory. If this entry is nonzero, is ignored.

  8. Temperature.

Subsequent lines (only needed if the DEPENDENCIES parameter has a nonzero value):

  1. First field variable.

  2. Second field variable.

  3. Etc., up to eight field variables per line.

Repeat this set of data lines as often as necessary to define the failure criterion as a function of temperature and other predefined field variables.