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*MAT
*MAT_GEOLOGIC_CAP_MODEL
This is Material Type 25. This an inviscid two invariant geologic cap model. This material model
can be used for geomechanical problems or for materials as concrete, see references cited below.
Card Format
Card 1
1
2
3
4
5
6
7
8
MID
RO
BULK
G
ALPHA
THETA
GAMMA
BETA
I
F
F
F
F
F
F
F
Variable
R
D
W
X0
C
N
Type
F
F
F
F
F
F
PLOT
FTYPE
VEC
TOFF
F
F
F
F
Variable
Type
Card 2
Card 3
Variable
Type
VARIABLE
DESCRIPTION
MID
Material identification. A unique number has to be chosen.
RO
Mass density.
BULK
G
ALPHA
Initial bulk modulus, K.
Initial Shear modulus.
Failure envelope parameter, α.
LS-DYNA3D Version 936
19.71 (MAT)