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Correlated multiple nodal forces

This is an example of a L-shaped panel subjected to multiple nodal force power spectral density excitation. *DATABASE_FREQUENCY_BINARY_D3PSD and *DATABASE_FREQUENCY_BINARY_D3RMS are used for post-processing of the results. The effect of correlated and uncorrelated excitations can be compared. Example 6.8 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.