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Re: forced vibration of a cantilever beam - width effect in COMSOL and ANSYS

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Hi Ivar,

Thank you for your reply.

I have uploaded my file. I have moved one step forward and let's forget to compare with other software.

The model is acoustic-structure interaction.

I want to see the deflection of a cantilever plate under 6pa acoustic domain.

Everything is defined in the model.

Two cantilever's are : 1- L=28mm , w=20mm, t= 0.82mm
2- L=28mm, w=2mm, t=0.82mm

The eigenfreq. of the wider plate is around 392hz and the narrower one around 378hz.
In this model the deflection of the wider plate around it's eigenfreq is more than the narrower one around it's eigenfrequency.
Based on vibration theory " deflection in forced harmonic analysis" since the wider one has more mass it should deflect less, and based on "static analysis" it also should deflect less than the narrower one.
In static analysis I have tested it is ok but in acoustic-structure module I have this problem.

I appreciate your help in this matter.

Regards,

Edvin

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