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.

Vibration of a 3D fixed-fixed string

Posted Sep 25, 2019, 3:21 p.m. EDT Acoustics & Vibrations, Structural Mechanics Version 5.4 2 Replies

Vishvesh Koranne
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

When I do the eigenfrequency study for the string, all I get are axial modes and not transverse modes. Could someone tell me why it is happening? I ticked the box to include geometric nonlinearities.

While I understand that it is a 2d problem, this is my starting point for modeling a tritare or an N string tyupe structure which will have motion in 3 dimensions. I matched my model with study 1 of vibrating string example available online.

Any help is appreciated

2 Replies Last Post Sep 28, 2019, 7:50 a.m. EDT
Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 5 years ago Sep 27, 2019, 8:47 a.m. EDT

Hi,

You have a Straight Edge Constraint in the model which does its job: Keeping the edge straight.

Just disable it, and you get transversal modes.

Regards,
Henrik

-------------------
Henrik Sönnerlind
COMSOL
Hi, You have a *Straight Edge Constraint* in the model which does its job: Keeping the edge straight. Just disable it, and you get transversal modes. Regards, Henrik
Vishvesh Koranne
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 5 years ago Sep 28, 2019, 7:50 a.m. EDT

Dear Henrik,

Thanks a lot. It solved the problem.

Dear Henrik, Thanks a lot. It solved the problem.

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