Command manual

Command list

PROP_DAMAGE_STRAIN

Material properties
*PROP_DAMAGE_STRAIN
"Optional title"
did, erode, noic
$\epsilon_{fail}^{geo}$, $\epsilon_{fail}^{t}$, $\epsilon_{fail}^{c}$, $\epsilon_{fail}^{vol}$

Parameter definition

VariableDescription
did Unique damage identification number
erode Element erosion flag
options:
0 $\rightarrow$ failed element is not eroded
1 $\rightarrow$ failed element is eroded
2 $\rightarrow$ node splitting at failure (crack plane orthogonal to max principal strain)
3 $\rightarrow$ node splitting at failure (crack plane orthogonal max principal stress)
noic Flag to turn off cracking along interface between different materials
options:
0 $\rightarrow$ material interface cracks are allowed
1 $\rightarrow$ material interface cracks are not allowed
$\epsilon_{fail}^{geo}$ Effective geometrical failure strain
default: not active
$\epsilon_{fail}^{t}$ Tensile failure strain
default: not active
$\epsilon_{fail}^{c}$ Compressive failure strain
default: not active
$\epsilon_{fail}^{vol}$ Volumetric failure strain
default: not active

Description

Various strain failure criteria. The material will lose its shear strength pressure once at least one of the criteria is met. The effective geometrical strain definition is:

$\epsilon^{geo} = \sqrt{ \frac{2}{3} \mathbf{\epsilon} : \mathbf{\epsilon} }$