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Coupling problem and LU factorization error
Posted 19 feb 2016, 11:07 GMT-5 Version 5.1, Version 5.2 4 Replies
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Hi,
I am modelling electrostatically actuated switch in Comsol 4.3. For this, I am coupling electrostatic+ moving mesh + solid mechanics physics. I have to find displacement in plate due to the applied voltage. So, I have applied the voltage on the top plate and grounded the bottom plate; for moving mesh, outer air boundary is considered. The Bottom plate and two ends of the top plate is considered as fixed and boundary load is applied to the top plate. But, after solving, an error message of ' out of memory during LU factorization'. Also, I don't know coupling has established or not as I am new in Comsol. Can anyone know how to apply boundary load.
Regard,
Vasudha
I am modelling electrostatically actuated switch in Comsol 4.3. For this, I am coupling electrostatic+ moving mesh + solid mechanics physics. I have to find displacement in plate due to the applied voltage. So, I have applied the voltage on the top plate and grounded the bottom plate; for moving mesh, outer air boundary is considered. The Bottom plate and two ends of the top plate is considered as fixed and boundary load is applied to the top plate. But, after solving, an error message of ' out of memory during LU factorization'. Also, I don't know coupling has established or not as I am new in Comsol. Can anyone know how to apply boundary load.
Regard,
Vasudha
4 Replies Last Post 7 apr 2016, 23:41 GMT-4
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Posted:
8 years ago
To get going on how to set up this type of model, see: www.comsol.com/model/electrostatically-actuated-cantilever-444 .
Best,
Jeff
Best,
Jeff
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Posted:
8 years ago
I saw this example, but it is solved with advanced version of Comsol and using electromechanical physics. I have Comsol 4.3, so I need to use electrostatics+moving mesh+solid mechanics to design electrostatically actuated switch, and I am finding difficulty in coupling electrostatic and solid mechanics.
With Regards,
Vasudha
With Regards,
Vasudha
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Posted:
8 years ago
Hello,
Do you know of any example on how to couple electrostaics and solid mechanics using a classkit license (no electromechanics interface)? How can we couple displacement due to electrostatic attraction back into the electrstatic computation after displacement? Thank you
Do you know of any example on how to couple electrostaics and solid mechanics using a classkit license (no electromechanics interface)? How can we couple displacement due to electrostatic attraction back into the electrstatic computation after displacement? Thank you
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Posted:
8 years ago
Hi Vasudha, have you found out a way to couple these withiout the mems electromechanics interface? Thank you