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PROP_DAMAGE_STRAIN

Material properties

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

Parameter definition

Variable
Description
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
$\varepsilon_{fail}^{geo}$
Effective geometrical failure strain
default: not active
$\varepsilon_{fail}^{t}$
Tensile failure strain
default: not active
$\varepsilon_{fail}^{c}$
Compressive failure strain
default: not active
$\varepsilon_{fail}^{vol}$
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:

$\displaystyle{ \varepsilon^{geo} = \sqrt{ \frac{2}{3} \boldsymbol{\varepsilon} : \boldsymbol{\varepsilon} } }$