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  • Users: rwoelfel
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  1. rwoelfel

    Random Vibration - Relative Displacements

    I need to get random psd and rms displacements relative to the base motion of my model. The MSC/Nastran Dynamics Users Manual suggests running the random analysis at some frequency above the zero hertz mode associated with the enforced motion of the large mass. Others have used mpc equations...

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