Menu

Discussion Forum

New Discussion
Filtrer

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 The information provided may be out of date.

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.

effeft of width on cantilever

Posted 22 mai 2014, 03:57 UTC−4 MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 4.3b 1 Reply

adsadasd adadad
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

If the change in width of the cantilever then pul l in voltage increses or decreses
1 Reply Last Post 26 mai 2014, 04:18 UTC−4
Pieter Westerik
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 26 mai 2014, 04:18 UTC−4
That depends. Do you include the region next to the cantilever? This region does contribute to the bending force (fringing field effect) but not to the restoring force (stiffness of the cantilever). If you make the cantilever wider the restoring and bending force in the cantilever region grow equally fast, but the fringing field force remains the same, so the ratio restoring:bending force becomes larger, so your pull-in voltage should increase.
That depends. Do you include the region next to the cantilever? This region does contribute to the bending force (fringing field effect) but not to the restoring force (stiffness of the cantilever). If you make the cantilever wider the restoring and bending force in the cantilever region grow equally fast, but the fringing field force remains the same, so the ratio restoring:bending force becomes larger, so your pull-in voltage should increase.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content