Menu

Discussion Forum

New Discussion
Filtrer

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.

How to force a non-solid truss to activate with solid surface displacement

Posted 18 juil. 2025, 08:15 UTC−4 Structural Mechanics, Physics Interfaces Version 6.3 2 Replies

志森 郑
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

In COMSOL, the truss element (non-solid line segment) and the geometry point of the solid surface have coincided exactly, but the truss has no displacement and no stress after applying the surface compression displacement, so how can I force the effective mechanical connection between the truss and the solid surface?

2 Replies Last Post 19 juil. 2025, 01:24 UTC−4
Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 7 months ago 18 juil. 2025, 08:59 UTC−4

You need to make sure that they have the same degrees of freedom. Go to the Dependent Variables section in the settings for the physics interface, and change the name so it is the same in both Solid Mechanics and Truss,

-------------------
Henrik Sönnerlind
COMSOL
You need to make sure that they have the same degrees of freedom. Go to the *Dependent Variables* section in the settings for the physics interface, and change the name so it is the same in both Solid Mechanics and Truss,
志森 郑
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 months ago 19 juil. 2025, 01:24 UTC−4

You need to make sure that they have the same degrees of freedom. Go to the Dependent Variables section in the settings for the physics interface, and change the name so it is the same in both Solid Mechanics and Truss,

I've done what you said, but it didn't work.

>You need to make sure that they have the same degrees of freedom. Go to the *Dependent Variables* section in the settings for the physics interface, and change the name so it is the same in both Solid Mechanics and Truss, I've done what you said, but it didn't work.

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