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.

About the nodes sequence in the global stiffness and mass matrix

Please login with a confirmed email address before reporting spam

Dear all,

Hi. When I got the stiffness and mass matrix using the 'mphmatrix' with matlab, and got the nodes and elements sequence of the model from DATA.vertex and DATA.elem using '[STATS,DATA]=mphmeshstats(model)', I found that the sequence of nodes corresponding to each row in the stiffness or mass matrix is not consistent with the sequence of nodes in DATA.vertex. For example, the third row in the stiffness may be not corresponding to the third node in the DATA.vertex. So my question is what is the sequence of nodes in the matrix?

I appreciate your help,

Regards, Yexi


0 Replies Last Post 27 mar 2023, 12:31 GMT-4
COMSOL Moderator

Hello xi ye

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.