Menu

Discussion Forum

New Discussion
Filtra

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 The information provided may be out of date.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.

integral

Posted 22 apr 2013, 04:00 GMT-4 Materials, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers, Structural Mechanics Version 4.3a 1 Reply

Tarik Madani
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

hi

do you know if it possible to calculate this integral in comsol (attach file) ?

thanks

Attachments:

1 Reply Last Post 26 apr 2013, 08:26 GMT-4
Fabio Greco
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 26 apr 2013, 08:26 GMT-4
Hi Tarik,

you have to define two integrals: go to Model>Definitions>Model Couplings>Integration. Do this two times (you have two integrals), so you get intop1 and intop2 that you define as surface integrals.
Then set in Results>Derived Values>Global evaluation your equation, that is: sqrt(intop1((e_xx-e_yy)^2)/intop2((tau_xx-tau_yy)^2)).

I hope this helps!

Fabio
Hi Tarik, you have to define two integrals: go to Model>Definitions>Model Couplings>Integration. Do this two times (you have two integrals), so you get intop1 and intop2 that you define as surface integrals. Then set in Results>Derived Values>Global evaluation your equation, that is: sqrt(intop1((e_xx-e_yy)^2)/intop2((tau_xx-tau_yy)^2)). I hope this helps! Fabio

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