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This is a second example of a cantilever beam subjected to power spectral density. Gravity is used for acceleration. *DATABASE_FREQUENCY_BINARY_D3PSD and *DATABASE_FREQUENCY_BINARY_D3RMS are defined to get output. Example 6.3 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.
Keywords
*BOUNDARY_SPC_NODE
*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL
*CONTROL_TERMINATION
*DATABASE_FREQUENCY_BINARY_D3PSD
*DATABASE_FREQUENCY_BINARY_D3RMS
*DATABASE_HISTORY_NODE
*DEFINE_COORDINATE_SYSTEM
*DEFINE_CURVE
*ELEMENT_BEAM_ORIENTATION
*END
*FREQUENCY_DOMAIN_RANDOM_VIBRATION
*KEYWORD
*MAT_ELASTIC
*NODE
*PART
*SECTION_BEAM
*TITLE
*KEYWORD
*TITLE
A beam example under PSD loading
*FREQUENCY_DOMAIN_RANDOM_VIBRATION
0 0 0. 2000.
0.05
1 1 2
2 12
*DATABASE_FREQUENCY_BINARY_D3PSD
1
20. 2000. 1981
*DATABASE_FREQUENCY_BINARY_D3RMS
1
*CONTROL_IMPLICIT_EIGENVALUE
100 0.000 0 0.000 1 2000.00 2 0.000
0 1
*CONTROL_IMPLICIT_GENERAL
1 0.100000 0 0 0 0 0 0
*CONTROL_TERMINATION
0.100000 0 0.000 0.000 0.000
*BOUNDARY_SPC_NODE
101 0 1 1 1 1 1 1
*DATABASE_HISTORY_NODE
101 149
*PART
Part number 101
101 101 101 0 0 0 0 0
*SECTION_BEAM
101 13 0.886525 0 0 0.000 0.000
0.785070 0.049087 0.049087 0.098092 0.000
*MAT_ELASTIC
101 2.5390E-4 9.9000E+6 0.330000 0.000 0.000 0
*DEFINE_COORDINATE_SYSTEM
1 0.000 0.000 0.000 1.000000 0.000 0.000
0.000 1.000000 0.000
*DEFINE_COORDINATE_SYSTEM
2 0.000 0.000 0.000 1.000000 0.000 0.000
0.000 1.000000 0.000
*DEFINE_CURVE
12 0 0.000 0.010 0.000 0.000 0
20.0000000 1.0000000
2000.0000000 1.0000000
*ELEMENT_BEAM_ORIENTATION
*NODE
*END
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