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- 1970-1-1
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各位仿真研友,大家好。
本人最近用ls-dyna模拟隧道多孔微差起爆。已将4个炸药孔分别设置为4个part,其微差起爆时间分别为0ms,25ms,50ms,75ms,求解时间为80ms。而求解结果发现:1段在0ms起爆,2约16ms起爆,3段约20ms起爆、4段约37ms起爆,与设置微差起爆时间不符。已经根据前人发的帖子对材料参数及网格划分进行调试,仍不能得到所需结果。有遇到该类情况的研友不妨交流下解决办法,希望得到各位研友指导。在此先行致谢,谢谢!
k文件参数设置:
*SECTION_SOLID
1,1
*SECTION_SOLID_ALE
2,12
*SECTION_SOLID_ALE
3,12
*SECTION_SOLID_ALE
4,12
*SECTION_SOLID_ALE
5,12
*SECTION_SOLID_ALE
6,12
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MATERIAL DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*MAT_PLASTIC_KINEMATIC
1,2.65,4.0E-1,0.3,1.0E-3,4.0E-2,0.5
0,0,0
*MAT_HIGH_EXPLOSIVE_BURN
2,1.64,0.693,0.27,0,0,0,0
*EOS_JWL
1,3.74,3.23E-2,4.15,0.95,0.3,0.07,1
*MAT_HIGH_EXPLOSIVE_BURN
3,1.64,0.693,0.27,0,0,0,0
*EOS_JWL
2,3.74,3.23E-2,4.15,0.95,0.3,0.07,1
*MAT_HIGH_EXPLOSIVE_BURN
4,1.64,0.693,0.27,0,0,0,0
*EOS_JWL
3,3.74,3.23E-2,4.15,0.95,0.3,0.07,1
*MAT_HIGH_EXPLOSIVE_BURN
5,1.64,0.693,0.27,0,0,0,0
*EOS_JWL
4,3.74,3.23E-2,4.15,0.95,0.3,0.07,1
*MAT_HIGH_EXPLOSIVE_BURN
6,1.64,0.693,0.27,0,0,0,0
*EOS_JWL
5,3.74,3.23E-2,4.15,0.95,0.3,0.07,1
*INITIAL_DETONATION
2,-200,40,0,0
*INITIAL_DETONATION
3,200,40,0,25E3
*INITIAL_DETONATION
4,-200,0,0,50E3
*INITIAL_DETONATION
5,200,0,0,75E3
*CONTROL_ALE
2,1,4,-1,0,0,0,0
0,0,0
*CONSTRAINED_LAGRANGE_IN_SOLID
1,2,0,0,3,5,3,1
0,0,0,0
*SET_PART_LIST
1
1
*SET_PART_LIST
2
2,3,4,5,6
*INITIAL_VOID_PART
6
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PARTS DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*PART
Part 1 for Mat 1 and Elem Type 1
1 1 1 0 0 0 0
$
*PART
Part 2 for Mat 2 and Elem Type 2
2 2 2 1 0 0 0
$
*PART
Part 3 for Mat 2 and Elem Type 3
3 3 3 2 0 0 0
$
*PART
Part 4 for Mat 2 and Elem Type 4
4 4 4 3 0 0 0
$
*PART
Part 5 for Mat 2 and Elem Type 5
5 5 5 4 0 0 0
$
*PART
Part 6 for Mat 3 and Elem Type 6
6 6 6 5 0 0 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ CONTROL OPTIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*CONTROL_ENERGY
2 1 2 1
*CONTROL_SHELL
20.0 1 -1 1 2 2 1
*CONTROL_BULK_VISCOSITY
1.50 0.600E-01
*CONTROL_ALE
2 0 1 0.00 0.00 0.00 0.00 0.00
0.00 0.100E+21 1.00 0.00 0.00 0
*CONTROL_TIMESTEP
0.0000 0.67 0 0.00 0.00
*CONTROL_TERMINATION
0.800E+05 0 0.00000 0.00000 0.00000
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ TIME HISTORY $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_BINARY_D3PLOT
100.0
*DATABASE_BINARY_D3THDT
80.00
*DATABASE_BINARY_D3DUMP
0
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ DATABASE OPTIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_EXTENT_BINARY
0 0 3 1 0 0 0 0
0 0 4 0 0 0
*END
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