*PLY FABRIC FAILURE

Products Abaqus/Explicit

Type Model data

LevelModel

Optional parameters

NUM FIBERS

This parameter allows you to define a material failure criterion based on the number of local fiber directions that have failed.

Set NUM FIBERS=1 (default) to fail the material point when either fiber direction fails ( $d_{1} = d_{m a x}$ or $d_{2} = d_{m a x}$ ).

Set NUM FIBERS=2 to fail the material point when both fiber directions fail ( $d_{1} = d_{m a x}$ and $d_{2} = d_{m a x}$ ).

First (and only) line

Maximum value of equivalent plastic strain, ${\bar{ε}}_{\max}^{p l}$ . The material point fails if ${\bar{ε}}^{p l} \geq {\bar{ε}}_{\max}^{p l}$ . If this value is omitted or a value of zero is specified, ${\bar{ε}}_{\max}^{p l}$ is not used in ply fabric damage initiation and evolution.
Maximum (positive) principal logarithmic strain, ${\hat{ε}}_{\max}$ . The material point fails if the maximum principal strain is greater than or equal to ${\hat{ε}}_{\max}$ . If this value is omitted or a value of zero is specified, ${\hat{ε}}_{\max}$ is not used as a criterion for element deletion.
Minimum (negative) principal logarithmic strain, ${\hat{ε}}_{\min}$ . The material point fails if the minimum principal strain is less than or equal to ${\hat{ε}}_{\min}$ . If this value is omitted or a value of zero is specified, ${\hat{ε}}_{\min}$ is not used as a criterion for element deletion.