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 The information provided may be out of date.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.


Hi all,

I am working on SQUEEZED-FILM DAMPING MODELS FOR MEMS in COMSOL. Where one of the plate(1) is fixed and other plate(2) is movable when applying pressure. Whole structure should be inside the vacuum box or gas.

So i need to calculate damping coefficient (b) . I need to give fixed constrain on one side of plate(2) and other side is movable. For fixed constrain I need to assign SOLID MECHANICS physics but when I assigned materials for vacuum or gas ,its required Young's Modulus and Poisson ratio but as we know for gas or liquid don't have these value.

Please help me in this regard.


0 Replies Last Post Jan 23, 2013, 5:40 PM EST
COMSOL Moderator

Hello Suzan Miah

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.

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.