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This is an example of of random vibration with pressure load. A rectangular plate is subjevted to power spectral density load. *DATABASE_FREQUENCY_ASCII_NODOUT_PSD, *DATABASE_FREQUENCY_ASCII_ELOUT_PSD and *DATABASE_FREQUENCY_BINARY_D3PSD are used for post-processing of the results. Example 6.1 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.
Keywords
*BOUNDARY_SPC_SET
*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL
*CONTROL_IMPLICIT_NONLINEAR
*CONTROL_SHELL
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_FREQUENCY_ASCII_ELOUT_PSD
*DATABASE_FREQUENCY_ASCII_NODOUT_PSD
*DATABASE_FREQUENCY_BINARY_D3PSD
*DATABASE_FREQUENCY_BINARY_D3RMS
*DATABASE_HISTORY_NODE_SET
*DATABASE_HISTORY_SHELL_SET
*DEFINE_CURVE
*ELEMENT_SHELL
*END
*FREQUENCY_DOMAIN_RANDOM_VIBRATION
*KEYWORD
*MAT_ELASTIC
*NODE
*PART
*SECTION_SHELL
*SET_NODE_LIST
*SET_SEGMENT
*SET_SHELL_LIST
*TITLE
*KEYWORD
*TITLE
Benchmark example of rectangular plate for random vibration
*FREQUENCY_DOMAIN_RANDOM_VIBRATION
1 16 0.000 0.000 0
0.020000 0 0 0.000 0.000 0
2 1 0 0.000 0 0 0 0
0 0 0
1 2 3 2001 0 0 0 0
*DATABASE_FREQUENCY_ASCII_NODOUT_PSD
1.000000 10.000000 9001 0 0
*DATABASE_FREQUENCY_ASCII_ELOUT_PSD
1.000000 10.000000 9001 0 0
*DATABASE_FREQUENCY_BINARY_D3PSD
1
1.000000 10.000000 91 0 0
*DATABASE_FREQUENCY_BINARY_D3RMS
1
*CONTROL_IMPLICIT_EIGENVALUE
100 0.000 0 0.000 0 0.000 0 0.000
0 0 0 0 1
*CONTROL_IMPLICIT_GENERAL
1 1.000000 0 0 0 0 0 0
*CONTROL_IMPLICIT_NONLINEAR
1 0 0 0.000 0.000 0.000 0.000 0.000
0 0 0 0
0 0 0.000 1 2
*CONTROL_SHELL
20.000000 0 -1 0 2 2 1 0
0.000 1 0 0 0 0 0 0
0 0 0
*CONTROL_TERMINATION
1.000000 0 0.000 0.000 0.000
*DATABASE_BINARY_D3PLOT
0.000 0 0 0 0
0
*DATABASE_HISTORY_NODE_SET
6 0 0 0 0 0 0 0
*DATABASE_HISTORY_SHELL_SET
1 0 0 0 0 0 0 0
*BOUNDARY_SPC_SET
1 0 1 1 0 0 0 1
*SET_NODE_LIST
*BOUNDARY_SPC_SET
2 0 0 0 1 1 0 0
*SET_NODE_LIST
*BOUNDARY_SPC_SET
3 0 0 0 1 1 0 0
*SET_NODE_LIST
*BOUNDARY_SPC_SET
4 0 0 0 1 0 1 0
*SET_NODE_LIST
*BOUNDARY_SPC_SET
5 0 0 0 1 0 1 0
*SET_NODE_LIST
*SET_SEGMENT
*PART
shell_4p
1 1 1 0 0 0 0 0
*SECTION_SHELL
1 20 0.833000 3 3 0 0 0
0.050000 0.050000 0.050000 0.050000 0.000 0.000 0.000 0
*MAT_ELASTIC
1 8000.00002.0000E+11 0.300000 0.000 0.000 0
*DEFINE_CURVE
2001 0 0.000 0.000 0.000 0.000 0
0.1000000 10000.000000
40.0000000 10000.000000
*SET_NODE_LIST
6 0.000 0.000 0.000 0.000
3281 0 0 0 0 0 0 0
*SET_SHELL_LIST
1 0.000 0.000 0.000 0.000
3160 3161 3240 3241 0 0 0 0
*ELEMENT_SHELL
*NODE
*END
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