Ansys LS-DYNA相关资料

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$ MATERIAL DEFINITIONS $

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*MAT_RIGID

2 7.80 2.10 0.300000 0.0 0.0 0.0 1.00 7.00 7.00

*MAT_RIGID

3 7.80 2.10 0.300000 0.0 0.0 0.0 1.00 6.00 7.00 *MAT_RIGID

4 7.80 2.10 0.300000 0.0 0.0 0.0 1.00 6.00 7.00 *MAT_NULL 1 1.00

*EOS_GRUNEISEN

1 .1484000 1.9790000 .0000000 .0000000 .1100000 3.0000000 .0000000 .0000000 $ $ $

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$ PARTS DEFINITIONS $

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*PART

Part 1 for Mat 4 and Elem Type 1 1 1 1 1 0 0 0 $

*PART

Part 2 for Mat 2 and Elem Type 1 2 2 2 0 0 0 0 $

*PART

Part 3 for Mat 3 and Elem Type 1 3 2 3 0 0 0 0 *PART

Part 3 for Mat 3 and Elem Type 1 4 2 4 0 0 0 0

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$ RIGID BOUNDRIES $

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*LOAD_BODY_Y 2,1.0

*DEFINE_CURVE 2

0.0,9.8E-10 1.0,9.8E-10 $

*DEFINE_CURVE

1 0 1.000 1.000 0.000 0.000

0.000000000000E+00 1.000000000000E-04 1.000000000000E+05 1.000000000000E-04

*BOUNDARY_PRESCRIBED_MOTION_RIGID 3 2 0 1 -1.00 0 0.000 0.000 $ $

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$ NODE DEFINITIONS $

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*CONTACT_AUTOMATIC_NODES_TO_SURFACE 1 1 3 2 0 0 0 0

0.000 0.000 0.000 0.000 0.000 0 0.000 0.0000E+08 0.000 0.000 0.100 0.000 0.000 0.000 0.000 0.000 1 0.1000000 3

*SET_PART_LIST 1 2,3,4

*INCLUDE mesh.k *END

3、 ALE（接触算法）

采用接触算法分析流固耦合问题也是一种选择，在液面波动幅度较小时可以采用此种方法进行分析，流体用ALE算法描述，结构采用Lagrange算法；需要注意的一点：对ALE网格要进行滑顺处理，以控制网格形态，保证求解精度。 下面是某算例的部分命令流：

*KEYWORD *TITLE ALE $

*DATABASE_FORMAT 0 $

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$ CONTROL OPTIONS $

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*CONTROL_PARALLEL 1

*CONTROL_ENERGY 2 2 2 2

*CONTROL_ALE

3 1 2 1.0000000 1.0000000 0.000000 1.0000000 1.0000e+9 0.000000 0.000000 2 *CONTROL_TIMESTEP 0.0000 0.9000 0 0.00 0.00 *CONTROL_CONTACT

0.0000000 0.0000000 1 0 2 0 0 0 0 0 0

*CONTROL_TERMINATION

0.100E+05 0 0.00000 0.00000 0.00000 $

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$ TIME HISTORY $

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*DATABASE_BINARY_D3PLOT 0.1000E+03

*DATABASE_BINARY_D3THDT 0.1000E+02

*DATABASE_EXTENT_BINARY 0 0 3 1 0 0 0 0 0 0 4 0 0 0 $ $

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$ SECTION DEFINITIONS $

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*SECTION_SOLID 2 1

*SECTION_SOLID_ALE 1 5 $ $

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$ MATERIAL DEFINITIONS $

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*MAT_RIGID

2 7.80 2.10 0.280000 0.0 0.0 0.0 1.00 7.00 7.00

*MAT_RIGID

3 7.80 2.10 0.280000 0.0 0.0 0.0 1.00 6.00 7.00 *MAT_RIGID

4 7.80 2.10 0.280000 0.0 0.0 0.0 1.00 6.00 7.00

*MAT_NULL

1 1.0000000 0.0000000 1.00000-8 0.0000000 0.0000000 0.0000000 0.0000000 *EOS_LINEAR_POLYNOMIAL

1 1.00000-6 1.92100-3 0.0000000 0.0000000 0.4000000 0.4000000 0.0000000 0.0000000 0.0000000 $ $ $

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$ PARTS DEFINITIONS $

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*PART