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 The information provided may be out of date.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.

Effect of the heating rate on thermal stresses induced by dilatations

Please login with a confirmed email address before reporting spam

Dear community,
I'm trying to modelize the thermal stresses induced in a sandwich structure composed of materials with different coefficients of thermal expansion (CTE). The stresses are induced by the large difference of CTE, during heating.

I would like to study the effect of the heating rate on the thermal stresses (the stresses should be lower with a lower heating rate).

However, the dilatations are always calculated from a reference temperature (Tref=25°C). Even with a time dependant study, the dilatations, at each temperature, are calculated from the reference temperature. Thus, the heating rate is not taken into account.

So, do you know which parameter i have to change to take into account the heating rate in the calculation of the dilatations ? (time dependant Tref....).

Thank you,
Emilien

0 Replies Last Post Sep 2, 2014, 3:30 a.m. EDT
COMSOL Moderator

Hello Emilien Feuillet

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.