Menu

Discussion Forum

New Discussion
查找

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 The information provided may be out of date.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.

ill conditioned preconditioner

Posted 2013年8月22日 GMT-4 13:33 Low-Frequency Electromagnetics, MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Structural Mechanics Version 4.3b 0 Replies

Evan Lowell
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I am trying to model the electromechanical response of a comb drive that is attached to a spring. However, every time that I try to simulate I get the following error:
Failed to find a solution.
In segregated group 3:
Very ill-conditioned preconditioner.
The relative residual is more than 1000 times larger than the relative tolerance.
Returned solution is not converged.

After looking through the forums I know that this error usually has to do with not using a large enough mesh. However, I get the same error regardless of how much I increase the predefined mesh sizes. Anyone have an idea of what I am doing wrong? Thanks in advance
0 Replies Last Post 2013年8月22日 GMT-4 13:33
COMSOL Moderator

Hello Evan Lowell

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.

Suggested Content