| Abaqus Keywords Reference Guide |
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| How to find keyword examples |
| Abaqus Keywords Reference Guide |
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| How to find keyword examples |
This option is used to specify the plastic part of the material model for elastic-plastic materials that use the Mises or Hill yield surface.
Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE
Type: Model data
Level: Model
Abaqus/CAE: Property module
“Classical metal plasticity,” Section 23.2.1 of the Abaqus Analysis User's Guide
“Models for metals subjected to cyclic loading,” Section 23.2.2 of the Abaqus Analysis User's Guide
“Johnson-Cook plasticity,” Section 23.2.7 of the Abaqus Analysis User's Guide
“Permanent set in rubberlike materials,” Section 23.7.1 of the Abaqus Analysis User's Guide
“UHARD,” Section 1.1.39 of the Abaqus User Subroutines Reference Guide
“VUHARD,” Section 1.2.19 of the Abaqus User Subroutines Reference Guide
Set HARDENING=ISOTROPIC (default) to specify isotropic hardening.
Set HARDENING=KINEMATIC to specify linear kinematic hardening.
Set HARDENING=COMBINED to specify nonlinear isotropic/kinematic hardening.
Set HARDENING=JOHNSON COOK to specify Johnson-Cook hardening.
This parameter cannot be used with the HARDENING parameter.
Set this parameter equal to the factor by which you want the yield stress to be scaled.
Set this parameter equal to the number of field variable dependencies included in the definition of hardening behavior, in addition to temperature and possibly strain range. If this parameter is omitted, the hardening 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.
Set this parameter equal to the equivalent plastic strain rate, 
, for which this stress-strain curve applies.
Set DATA TYPE=HALF CYCLE (default) to specify stress versus plastic strain values of the first half-cycle for calibrating the kinematic hardening parameters.
Set DATA TYPE=PARAMETERS to specify the calibrated kinematic hardening material parameters directly.
Set DATA TYPE=STABILIZED to specify stress versus plastic strain values of a stabilized cycle for calibrating the kinematic hardening parameters.
Set this parameter equal to the number of backstresses. The default number of backstresses is 1, and the maximum allowed is 10.
First line:
Yield stress.
Plastic strain.
Temperature.
First field variable.
Second field variable.
Etc., up to five field variables.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than five):
Sixth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to define the dependence of yield stress on plastic strain and, if needed, on temperature and other predefined field variables.
First line:
Yield stress.
Plastic strain.
Strain range.
Temperature.
First field variable.
Second field variable.
Etc., up to four field variables.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four):
Fifth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to define the dependence of yield stress on plastic strain and, if needed, on strain range, temperature, and other predefined field variables.
First line:
Yield stress at zero plastic strain.
Kinematic hardening parameter, 
.
Kinematic hardening parameter, 
.
Etc., specify kinematic hardening parameters 
and 
for each backstress k. (Only needed if the NUMBER BACKSTRESSES parameter has a value greater than 1.)
Temperature.
First field variable.
Second field variable.
Etc., up to eight entries per line.
Subsequent lines (only needed if the number of entries is greater than eight):
Etc., up to eight entries per line.
Repeat this set of data lines as often as necessary to define the dependence of yield stress and kinematic hardening parameters and on temperature and other predefined field variables.
First line:
Yield stress.
Plastic strain.
Temperature, if temperature dependent.
Repeat this data line a maximum of two times to define linear kinematic hardening independent of temperature. Repeat this set of data lines as often as necessary to define a variation of the linear kinematic hardening modulus with respect to temperature.
.
.