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Frequencies on a squared plate (membrane)
Posted 2015年1月6日 GMT-5 09:48 Structural Mechanics Version 4.4 2 Replies
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Hi guys, i'm sorry if i'm doing this wrong but i'm kinda new on COMSOL and I'd like to know if you guys could help me on this exercise:
i need to see how is the behavior of the frequencies on a squared membrane, like chladni figures experiment. There's a model for circular ones that works pretty well but i can't adapt for myself, because there's data like pre-tensions that i won't need right now. My plate is only fixed on the center by a screw on a base made by me. I just would like to see how would be this behavior on some frequencies (6 is fine).
Plate:
size - 16 cm
thickness - 3 mm
poisson - 0.33
young - 69 GPa
i need to see how is the behavior of the frequencies on a squared membrane, like chladni figures experiment. There's a model for circular ones that works pretty well but i can't adapt for myself, because there's data like pre-tensions that i won't need right now. My plate is only fixed on the center by a screw on a base made by me. I just would like to see how would be this behavior on some frequencies (6 is fine).
Plate:
size - 16 cm
thickness - 3 mm
poisson - 0.33
young - 69 GPa
2 Replies Last Post 2015年4月22日 GMT-4 21:07
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Posted:
10 years ago
Hi Fabio,
Please check if the attached model can help.
Regards,
Dima.
--
Dima Apter
A2Z Consulting Ltd.
www.a2z-consulting.com
Please check if the attached model can help.
Regards,
Dima.
--
Dima Apter
A2Z Consulting Ltd.
www.a2z-consulting.com
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Posted:
10 years ago
Dima,
Why do you apply a fixed boundary condition to the center hole? Isn't this where the forcing of the plate would actually occur (say, from a shaker)?
Thanks,
Sam
Why do you apply a fixed boundary condition to the center hole? Isn't this where the forcing of the plate would actually occur (say, from a shaker)?
Thanks,
Sam