recently, I use MAT_155 for ICE modeling. which was established by NASA.
The material parameter of mat 155 comes from the literature "A High strain
rate model with failure for ice in LS DYNA". And my product is an ice
plate impacting on a concrete column.
But something is wrong in my simulation. The result of the ice plate
shows that, there is only X-stress, Y-strees and Z-stress. and they are
all equal. But the XY-stress, XZ-stress, YZ-stress, are zero. The feature
likes fluid material. I don't know What is wrong? Please help me.
The material parament is that :
*MAT_PLASTICITY_COMPRESSION_TENSION_EOS
$# mid ro e pr c p fail
tdel
2 915.00000 9.4500E+9 0.330000 1.100000 1.100000 0.000
0.000
$# lcidc lcidt lcsrc lcsrt srflag
0 0 0 0
$# pc pt pcutc pcutt pcutf
0.000 0.000 3.0450E+6 4.3960E+5
$# k
0.000
*EOS_TABULATED_COMPACTION
$# eosid gama e0 vo
1 0.000 0.000 0.000
$# ev1 ev2 ev3 ev4
ev5
0.000 0.0078000 0.1000000 0.000
0.000
$# ev6 ev7 ev8 ev9
ev10
0.000 0.000 0.000 0.000
0.000
$# c1 c2 c3 c4
c5
0.000 -6.8950000e+007 -6.8950000e+007 0.000
0.000
$# c6 c7 c8 c9
c10
0.000 0.000 0.000 0.000
0.000
$# t1 t2 t3 t4
t5
0.000 0.000 0.000 0.000
0.000
$# t6 t7 t8 t9
t10
0.000 0.000 0.000 0.000
0.000
$# k1 k2 k3 k4
k5
0.000 0.000 0.000 0.000
0.000
$# k6 k7 k8 k9
k10
0.000 0.000 0.000 0.000
0.000
Problem for MAT 155 IN LS DYNA
Forums
Free Tags
Before go to the lsdyna
Before go to the lsdyna input, I'd like to ask you what are you going to simualte in first place? what's the impact velocity of the impact? Please notice that the MAT_155 is only for very high strain rate ice behaviors.