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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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URGENT :How to find resonant frequency ?

Posted 2012年6月22日 GMT-4 04:47 Version 4.3 2 Replies

Vijay Ramakrishnan
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Hi ,
I have modeled a mems piezoresistive pressure sensor. I have included only the solid mechanics module.
I want to know how to find the resonant frequency of the structure ? Plz tell me in detail if i have to include any other physics module and which options i should use.
Thanking u.
2 Replies Last Post 2012年6月22日 GMT-4 15:49
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年6月22日 GMT-4 14:36
Hi

if you have defined your geometry, materials and BC (fixed constraints + any added mass or spring elements that might apply) hen in Solid you run an eigenfrequency solver and you have your modes

--
Good luck
Ivar
Hi if you have defined your geometry, materials and BC (fixed constraints + any added mass or spring elements that might apply) hen in Solid you run an eigenfrequency solver and you have your modes -- Good luck Ivar
Bjorn Sjodin COMSOL Employee

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Posted: 1 decade ago 2012年6月22日 GMT-4 15:49

Hi ,
I have modeled a mems piezoresistive pressure sensor. I have included only the solid mechanics module.
I want to know how to find the resonant frequency of the structure ? Plz tell me in detail if i have to include any other physics module and which options i should use.
Thanking u.


The new version of the MEMS Module has 3 new dedicated user interfaces for piezoresistivity. Please see:
www.comsol.com/products/4.3/#mems
for more information.
[QUOTE] Hi , I have modeled a mems piezoresistive pressure sensor. I have included only the solid mechanics module. I want to know how to find the resonant frequency of the structure ? Plz tell me in detail if i have to include any other physics module and which options i should use. Thanking u. [/QUOTE] The new version of the MEMS Module has 3 new dedicated user interfaces for piezoresistivity. Please see: http://www.comsol.com/products/4.3/#mems for more information.

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