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natural frequency of panel

natural frequency of panel

natural frequency of panel

(OP)
what equation would you use to calculate the natural frequency of a panel that has a 2hp motor attached to it running at 1160 rpm's.

RE: natural frequency of panel

(k/m)^0.5

Where k and m may be more difficult to calculate...

k can perhaps be estimated by looking up deflection of a flat plate under localized loading (Roark).  Pay attention to the edge conditions!

m can perhaps be estimated by adding an allowance for plate mass to the mass of the engine.

Might be easier to use FEA.

RE: natural frequency of panel

(OP)
i've got pro/e mechanica and mechanism, however, i am not aware of how to add a motor to the assembled parts i have in pro/mechanism

RE: natural frequency of panel

You can add a point mass in Mechanica, or make a box that will have the same footprint as your motor and assign it the mass of the motor.

Erik

RE: natural frequency of panel

It might be slightly better to make an object with the footprint of the motor, and with similar mass and moments of inertia (will represent "motor wobbling" modes of vibration better).

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