Menu

Discussion Forum

New Discussion
Filter

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.

Derive mass matrix and stiffness matrix using frequency domain study

Posted Jun 1, 2023, 3:34 a.m. EDT 0 Replies

Weilun Xie
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I encountered a problem while using the function 'mphmatrix' to obtain the system matrix. First, I want to obtain the mass matrix and stiffness matrix of the model in the frequency domain study, but the mass matrix I derived is an all zero matrix.

Do you have a solution?

Best regards

Weilun Xie

0 Replies Last Post Jun 1, 2023, 3:34 a.m. EDT
COMSOL Moderator

Hello Weilun Xie

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