Menu

Discussion Forum

New Discussion
Filtern

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 The information provided may be out of date.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.

Singular matrix.

Posted 12.04.2012, 11:59 GMT-4 MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 4.2 0 Replies

Salah Amine
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I try to modeling a model of capacitive pressure sensor (MEMS sensor COMSOL version 3.3a) to a new COMSOL version 4.2, when I try to solving I get this problem (Feature : stationary solver 1 sol1/s1 ).

Failed to find a solution for the initial parameter.
Segregated group 2

Singular matrix.

There are 2582 void equations (empty rows in matrix) for the variable mod1.T2
at coordinates: (0.00175,0.001), (0.002,0.001), (0.00225,0.001), (0.00185701,0.00095885), (0.0025,0.001), ...
and similarly for the degrees of freedom (empty columns in matrix)
Returned solution is not converged.

Thanck you in advance.

Attachments:

0 Replies Last Post 12.04.2012, 11:59 GMT-4
COMSOL Moderator

Hello Salah Amine

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