*MAT_ADD_DAMAGE_DIEM

LS-DYNA Input Interface KeywordDefines failure criteria in which damage initiation and damage evolution can be separately defined.

Damage initiation has no influence on the stress computation and damage evolution can lead to stress softening.

Format

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*MAT_ADD_DAMAGE_DIEM
mat_ID NINIEVO PTHICKFAIL    
INITYPE TAB_ID PARAM2 PARAM3 ISHEAR TAB_EL
EVOTYPE COMPTYP DISP ALPHA    

Definition

Field Contents SI Unit Example
mat_ID Material identifier.

(Integer)
NINIEVO Number of initiation/evolution criteria.

(Integer)
PTHICKFAIL Failed layers prior ratio to shell element deletion.

(Real)
INITYPE Damage initiation tabulated criterion type.

(Integer)
TAB_ID Failure initiation criterion table identifier.

(Integer)

  
PARAM2 Failure initiation criterion parameter.

(Real)

  
PARAM3 Failure formulation parameter.

(Real)

  
ISHEAR Take transverse shear components into account flag.

(Integer)

  
TAB_EL Element size scaling for failure initiation criterion.

(Integer)
EVOTYPE Damage evolution type.

(Integer)

  
COMPTYP Criterion combination type (only if NINIEVO > 0).

(Integer)
DISP Plastic displacement at failure.

(Real)

 [ m ]
ALPHA Exponential shape parameter.

(Real)

 [ J m 2 ]

Comments

  1. This keyword maps to /FAIL/INIEVO.