Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Question about "Pull-in of an RF MEMS Switch" in COMSOL model library (v4.4)
Posted 2014年7月14日 GMT-4 04:15 MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 4.4, Version 5.2 1 Reply
Please login with a confirmed email address before reporting spam
I am trying to model a MEMS device that is something like a capacitor whose bias voltage is above the pull-in voltage. So I want to investigate the behavior of the "collapsed" of the top plate of capacitor.
Since it is impossible to collapse the mesh to zero thickness in COMSOL, the stationary study will not convergence.
In COMSOL v4.4, I found an useful reference of " Pull-in of an RF MEMS Switch" in the model library. It uses a mean of a spatially varying function for the dielectric constant within the gap to overcome the mesh problems. However, the stationary study just used for calculating the initial capacitance, and the collapsed phenomenon is simulated by a Time Dependent in the study.
I want to investigate the stationary status after the pull-in. When I try to build the stationary model with this mean but failed because of the non convergence.
I don't know whether this tip in the model library is suitable for stationary study.
The reference pdf file is attached. Any suggestion is appreciated!
Attachments:
Hello Yuanyu Yu
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.
Please login with a confirmed email address before reporting spam
Thanks!