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Accelerometer load

Posted Sep 17, 2012, 4:26 p.m. EDT MEMS & Piezoelectric Devices 4 Replies

Sudhaman Parthasarathi
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I am trying to apply load on a silicon mass and while trying to compute i get this error. stationary solver (sol1/s1).
How do i get rid of this error. How can i apply a load of say 3g.

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4 Replies Last Post Sep 23, 2012, 5:11 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Sep 18, 2012, 2:39 a.m. EDT
Hi

a 3G load is a "body load" of the type "solid.rho*3*g_const" in the given direction you desire, or you need to define a specific coordinate system and have COMSOL do the vector distribution of the load

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Good luck
Ivar
Hi a 3G load is a "body load" of the type "solid.rho*3*g_const" in the given direction you desire, or you need to define a specific coordinate system and have COMSOL do the vector distribution of the load -- Good luck Ivar
Sudhaman Parthasarathi
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Posted: 1 decade ago Sep 22, 2012, 3:33 p.m. EDT
i have sucessfully made the model to deform under the load. But when i draw a surrounding layer around the electrodes and apply air as the material, im not able to get the deformation and it simply shows the same error.
i have sucessfully made the model to deform under the load. But when i draw a surrounding layer around the electrodes and apply air as the material, im not able to get the deformation and it simply shows the same error.
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Sep 23, 2012, 2:56 a.m. EDT
Hi

but air is a gas not a solid so what physics do you use for that ?
normally you have in FSI for such cases

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Good luck
Ivar
Hi but air is a gas not a solid so what physics do you use for that ? normally you have in FSI for such cases -- Good luck Ivar
Sudhaman Parthasarathi
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Posted: 1 decade ago Sep 23, 2012, 5:11 a.m. EDT
oh, i used solid mechanics. So, now what physics shud i then use.
oh, i used solid mechanics. So, now what physics shud i then use.

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