Menu

Discussion Forum

New Discussion
Filtern

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 The information provided may be out of date.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.

specifying a global constraint on an internal variable

Posted 07.05.2012, 03:46 GMT-4 Materials, Structural Mechanics Version 4.2 2 Replies

Lakshmi Selvakumaran
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

is there a way to specify a constraint that the average of a stress component must be zero?
2 Replies Last Post 08.05.2012, 02:32 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 07.05.2012, 04:59 GMT-4
Hi

i do not believe you have them "pre-cooked", but it should be possible via a weak equations or an external ODE

--
Good luck
Ivar
Hi i do not believe you have them "pre-cooked", but it should be possible via a weak equations or an external ODE -- Good luck Ivar
Lakshmi Selvakumaran
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 08.05.2012, 02:32 GMT-4
Hi Ivar,

Thanks for your reply. I tried to apply a global weak constraint on the model by assigning a average operator on the domain and then specifying the average of the stress component to be zero. But it does not work.
Hi Ivar, Thanks for your reply. I tried to apply a global weak constraint on the model by assigning a average operator on the domain and then specifying the average of the stress component to be zero. But it does not 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