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*CYCLIC HARDENING
Specify the size of the elastic range for the combined hardening model.

This option is used to define the evolution of the elastic domain for the nonlinear isotropic/kinematic hardening model. It can be used only in conjunction with the *PLASTIC option. The elastic domain remains constant during the analysis if this option is not used.

Products: Abaqus/Standard  Abaqus/Explicit  Abaqus/CAE  

Type: Model data

Level: Model  

Abaqus/CAE: Property module

References:

Optional parameters:

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the cyclic hardening behavior, in addition to temperature. If this parameter is omitted, this behavior does not depend on field variables. See “Specifying field variable dependence” in “Material data definition,” Section 21.1.2 of the Abaqus Analysis User's Guide, for more information.

PARAMETERS

Include this parameter to provide the material parameters and b directly.

USER

Include this parameter to define the elastic range in user subroutine UHARD in Abaqus/Standard analyses and user subroutine VUHARD in Abaqus/Explicit analyses. This parameter cannot be included if the kinematic hardening component is specified via half-cycle test data using DATA TYPE=HALF CYCLE on the associated *PLASTIC option.

Optional parameter for use with the USER parameter: 

PROPERTIES

Set this parameter equal to the number of property values needed as data in user subroutine UHARD in Abaqus/Standard analyses and user subroutine VUHARD in Abaqus/Explicit analyses. The default is PROPERTIES=0.

Optional parameter if neither PARAMETERS nor USER is included: 

RATE

Set this parameter equal to the equivalent plastic strain rate, , for which this stress-strain curve applies.

Data lines to give tabular material data: 

First line:

  1. Equivalent stress defining the size of the elastic range.

  2. Equivalent plastic strain.

  3. Temperature.

  4. First field variable.

  5. Etc., up to five field variables.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than five):

  1. Sixth field variable.

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

Repeat this set of data lines as often as necessary to define the values of the isotropic component as a function of plastic strain, temperature, and other predefined variables.

Data lines to define the material parameters directly (PARAMETERS): 

First line:

  1. Equivalent stress defining the size of the elastic range at zero plastic strain.

  2. Isotropic hardening parameter, .

  3. Isotropic hardening parameter, b.

  4. Temperature.

  5. First field variable.

  6. Etc., up to four field variables.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four):

  1. Fifth field variable.

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

Repeat this set of data lines as often as necessary to define the dependence of the material parameters on temperature and other predefined field variables.

Data lines for USER with PROPERTIES: 

First line:

  1. Give the hardening properties, eight per line.

Repeat this data line as often as necessary to define all hardening properties.