nModal analysis computes the shape and frequency of modes and displays a magnitude of displacement and stress that has no meaning for the displacement and stress of a real structure because there is no load applied to the structure in a modal analysis.nRead this discussion to learn how the displacements are normalized in a modal analysis. https://forum.ansys.com/discussion/2569/comparing-stresses-from-modal-analysis-and-static-analysisnasks about parts flying away because modal analysis is a great method of finding mistakes in connections between parts to prepare the model for other analyses to be done.n
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