Menu

Discussion Forum

New Discussion
Filtrer

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 The information provided may be out of date.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.

out of memory in stationery solver

Posted 23 janv. 2014, 04:33 UTC−5 Version 4.2a 3 Replies

Daisy Rani
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

hi,
I designed a MEMS piezoelectric accelerometer and trying to simulate in comsol. I am getting the error every time I compute " out of memory in stationary solver"... Please help me to solve it...

Regards
Daisy Rani
3 Replies Last Post 24 janv. 2014, 13:22 UTC−5
Daisy Rani
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 23 janv. 2014, 04:38 UTC−5
Hi,
Sorry i didn't attch my model... Now I attach my model . Please look into that...
Hi, Sorry i didn't attch my model... Now I attach my model . Please look into that...

Attachments:

Esai Fotso Tagah
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 24 janv. 2014, 05:15 UTC−5
Hi rani

You must to check you mesh.
i see your Modell and you mesh don't working. you to resove it.

Mesh >> Fine>> computer oder with Extremly Fine
Hi rani You must to check you mesh. i see your Modell and you mesh don't working. you to resove it. Mesh >> Fine>> computer oder with Extremly Fine
Lasse Murtomäki
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 24 janv. 2014, 13:22 UTC−5
Hi

Your problem is the extremely thin layers (< 1 µm) which makes meshing very difficult, although not impossible. I looked at your model and meshed the four thin "arms" with swept mesh, defining the resolution of the narrow region down to 1e-7, minimum element size to 0.1 µm, maximum size to 20 µm, and number of elements across a layer to 5. Meshing the rest did not succeed but I think I know the solution: you have to define similar thin layers in the large block in the center, so that the thin layers coincide in the contact boundaries of the "arms" and the central block. As I am using version 4.3b I do not attach a model because you cannot open it with 4.2a.

Good luck!
Lasse
Hi Your problem is the extremely thin layers (< 1 µm) which makes meshing very difficult, although not impossible. I looked at your model and meshed the four thin "arms" with swept mesh, defining the resolution of the narrow region down to 1e-7, minimum element size to 0.1 µm, maximum size to 20 µm, and number of elements across a layer to 5. Meshing the rest did not succeed but I think I know the solution: you have to define similar thin layers in the large block in the center, so that the thin layers coincide in the contact boundaries of the "arms" and the central block. As I am using version 4.3b I do not attach a model because you cannot open it with 4.2a. Good luck! Lasse

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