I have added a feature for rectangular plate bending modes to the Matlab GUI package.
Matlab script: Vibrationdata Signal Analysis Package
The script allows for the addition of point masses and point constraints. This is a work-in-progress. The next step will be to add base excitation options.
The new feature can be accessed via:
vibrationdata > Miscellaneous > Structural Dynamics > Plates, Rectangular & Circular > Rectangular Plate, Finite Element Method
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Here is a reference paper: FEA_plate_bending.pdf
See also: Dynamic Response to Enforced Motion
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– Tom Irvine