*PLY FABRIC HARDENING

Optional parameters

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the hardening behavior, in addition to temperature and possibly plastic strain. If this parameter is omitted, the hardening behavior does not depend on field variables. See Material Data Definition for more information.

TYPE

Set TYPE=JOHNSON COOK (default) to define Johnson Cook hardening.

Set TYPE=TABULAR to define the hardening behavior by giving the yield stress as a function of the yield strain.

Data lines to define ply fabric shear plasticity (TYPE=JOHNSON COOK)

First line

Initial yield stress, ${σ |}_{0}$ . (Units of FL⁻².)
$C$ . (Units of FL⁻².)
$n$ . (Dimensionless.)
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 ${σ |}_{0}$ , $C$ , and $n$ on temperature and other predefined field variables.

Data lines to define ply fabric shear plasticity (TYPE=TABULAR)

First line

Yield stress.
Absolute value of the corresponding plastic strain. (The first tabular value entered must always be zero.)
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.