LS-DYNA流固耦合*ALE_MULTI-MATERIAL_GROUP关键字出错

每次做 LS-DYNA流固耦合的时候都是出现这种问题，我查找关键字手册，*ALE_MULTI-MATERIAL_GROUP关键字，

IDTYPE的数值只有两种，一种是1，一个是0.
如下例子是参考 http://shop.e-works.net.cn/Read.aspx?id=6092，炸药在土壤内部爆炸，关键字相同，但是就是计算不了，计算错误如下图。
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ SECTION DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*SECTION_SOLID_ALE
1 11
*SECTION_SOLID_ALE
2 11
*SECTION_SOLID_ALE
3 11
*SECTION_SOLID
4 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ ALE DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*ALE_MULTI-MATERIAL_GROUP
1,1
2,1
3,1
*CONSTRAINED_LAGRANGE_IN_SOLID
1,2,0,0,0,5,3,0
0,0,0.15
*SET_PART_LIST
1
4
*SET_PART_LIST
2
2 3
*CONTROL_ALE
2,1,2,-1.0000000,0.0000000,0.0000000,0.0000000
0.0000000,0.0000000,0.0000000
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MATERIAL DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*MAT_HIGH_EXPLOSIVE_BURN
1,1.93,0.993,0.370,0.000E+00
*EOS_JWL
1,3.71,7.430E-02,4.15,0.950,0.300,7.000E-02,1.00
$
*INITIAL_DETONATION
1,0.00,0.00,0.00,0.00
$
*MAT_SOIL_AND_FOAM
2,1.80,1.601E-04,1.328E+02,3.300E-03,1.310E-07,0.1232,0.0
0.0,0.0
0.0,0.050,0.090,0.11,0.15,0.19,0.21,0.22
0.25,0.30
0.0,3.420E-02,4.530E-02,6.760E-02,1.270E-01,2.080E-01,2.710E-01,3.920E-01
5.660E-01,1.230E+00
$
*MAT_NULL
3,0.125E-02,0.00,0.00,0.00,0.00,0.00,0.00
*EOS_GRUNEISEN
3,0.344,0.00,0.00,0.00,1.40,0.00,0.00
0.00
$
*MAT_PLASTIC_KINEMATIC
4,2.6500000,4.000E-01,0.3000000,1.000E-03,4.000E-02,0.5000000
0.0000000,0.0000000,0.8000000
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PARTS DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*PART
Part 1 for Mat 1 and Elem Type 1
1 1 1 1 0 0 0
$
*PART
Part 2 for Mat 2 and Elem Type 2
2 2 2 0 0 0 0
$
*PART
Part 3 for Mat 3 and Elem Type 3
3 3 3 3 0 0 0
$
*PART
Part 4 for Mat 4 and Elem Type 4
4 4 4 0 0 0 0
$
但是，我自己有时候把*ALE_MULTI-MATERIAL_GROUP关键字中的IDTYPE改成2，计算就可以进行。但是结果又不对，到底是怎么回事，各位大侠帮着看看吧