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 The information provided may be out of date.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.

Extracting Frequency Response data of Cantilever Beam

Shathushan Sivashangaran

Please login with a confirmed email address before reporting spam

Hi,

I am trying to get the frequency response and deformation of a simple 2D cantilever beam that has an edge load and is fixed on the opposite end. I assigned the material as structural steel and set the physics using the ‘beam’ module under structural mechanics. For study, I used the frequency domain with a range from 1 to 1000 and under 'Dependent Variables' I have 'Displacement Field' with components 'comp2.u, comp2.v, comp2.thz' being listed as field components. Using the default mesh settings, I ran the analysis and after computing the results, when I try to export the data for plotting using Matlab, I cannot get the deformation and frequency values. Using any of the 'comp2.u, comp2.v, comp2.thz' as expressions for data under export generates an error message, 'Cannot Evaluate Expression'. I would like to know why this happens, and how I can successfully export the frequency and deformation data.

Thank you.

0 Replies Last Post Jun 28, 2017, 12:54 p.m. EDT
COMSOL Moderator

Hello Shathushan Sivashangaran

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.