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本帖最后由 涉远飞高 于 2016-9-28 15:13 编辑
近来想做水介质不耦合装药的数值模拟,使用流固耦合方法进行了模拟,模拟中炸药、水、岩土分开建模,将炸药和水glue然后划分网格,岩土划分网格,最后使用关键字进行流固耦合分析,但是分析结果很古怪,岩土中爆炸压力只有几十Mpa。
此外若对岩土加入失效关键字,岩土中压力就会变得只有几十pa。。。
求诸位大神解惑,为什么失效关键字加入会产生这么大的变化?此外,不加失效时的岩土中爆炸压力几十MPa也不是很对,是不是流固耦合关键字有问题?
不加失效:
SECTION DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*SECTION_SOLID_ALE
1,11
*SECTION_SOLID
2,0
*CONSTRAINED_LAGRANGE_IN_SOLID
1,2,0,0,0,5,3,0
0,0,0.15
*SET_PART_LIST
1
1
*SET_PART_LIST
2
2
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MATERIAL DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*MAT_PLASTIC_KINEMATIC
1,0.33e4,0.325e11,0.25,7.0e8,6.71e9,0.5
2.50,4.00,0.00
*MAT_HIGH_EXPLOSIVE_BURN
2,1.2e3,4.5e3,7.62e9,0,0,0,0
*EOS_JWL
1,3.2642e11,5.8089e9,5.8,1.56,0.57,2.6728e9,1
*INITIAL_DETONATION
3,0,0,0,0
*MAT_NULL
3,1e3,0,0,0,0,0,0
*EOS_GRUNEISEN
2,1647,1.921,-0.096,0,0.35,0,0
0
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PARTS DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*PART
Part 1 for Mat 1 and Elem Type 1
1 2 1 0 0 0 0
$
*PART
Part 2 for Mat 3 and Elem Type 1
2 1 3 2 0 0 0
$
*PART
Part 3 for Mat 2 and Elem Type 1
3 1 2 1 0 0 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ ELEMENT DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
。。。
*CONTROL_ENERGY
2 2 2 2
*CONTROL_SHELL
20.0 1 -1 1 2 2 1
*CONTROL_ALE
2 1 2 -1.00 0.00 0.00 0.00 0.00
0.00 0.100E+21 1.00 0.00 0.00 0
*ALE_MULTI-MATERIAL_GROUP
2,1
3,1
*CONTROL_TIMESTEP
0.0000 0.6700 0 0.00 0.00
*CONTROL_TERMINATION
0.200E-02 0 0.00000 0.00000 0.00000
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ TIME HISTORY $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_BINARY_D3PLOT
0.1000E-04
*DATABASE_BINARY_D3THDT
0.2000E-02
加入失效:
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ SECTION DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*SECTION_SOLID_ALE
1,11
*SECTION_SOLID
2,0
*CONSTRAINED_LAGRANGE_IN_SOLID
1,2,0,0,0,5,3,0
0,0,0.15
*SET_PART_LIST
1
1
*SET_PART_LIST
2
2
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MATERIAL DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*MAT_PLASTIC_KINEMATIC
1,0.33e4,0.325e11,0.25,7.0e8,6.71e9,0.5
2.50,4.00,0.00
*MAT_ADD_EROSION
1,123
123,2.08e3,123,123,123,123,123,123
*MAT_HIGH_EXPLOSIVE_BURN
2,1.2e3,4.5e3,7.62e9,0,0,0,0
*EOS_JWL
1,3.2642e11,5.8089e9,5.8,1.56,0.57,2.6728e9,1
*INITIAL_DETONATION
3,0,0,0,0
*MAT_NULL
3,1e3,0,0,0,0,0,0
*EOS_GRUNEISEN
2,1647,1.921,-0.096,0,0.35,0,0
0
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PARTS DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*PART
Part 1 for Mat 1 and Elem Type 1
1 2 1 0 0 0 0
$
*PART
Part 2 for Mat 3 and Elem Type 1
2 1 3 2 0 0 0
$
*PART
Part 3 for Mat 2 and Elem Type 1
3 1 2 1 0 0 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
。。。。
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*CONTROL_ENERGY
2 2 2 2
*CONTROL_SHELL
20.0 1 -1 1 2 2 1
*CONTROL_ALE
2 1 2 -1.00 0.00 0.00 0.00 0.00
0.00 0.100E+21 1.00 0.00 0.00 0
*ALE_MULTI-MATERIAL_GROUP
2,1
3,1
*CONTROL_TIMESTEP
0.0000 0.6700 0 0.00 0.00
*CONTROL_TERMINATION
0.200E-02 0 0.00000 0.00000 0.00000
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ TIME HISTORY $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_BINARY_D3PLOT
0.1000E-04
*DATABASE_BINARY_D3THDT
0.2000E-02
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