Transferring Stress Between Sequential Studies

Please login with a confirmed email address before reporting spam

I am performing thermal stress analysis of layered materials using Joule Heating coupled with Solid Mechanics. After completing the first time dependent study, I run a second study where I use the final time step of the first study as the initial condition for the new analysis. The temperature field is transferred correctly. However, the stress values at the initial time step of the second study do not match the final stress results from the first study.

I understand that the transferred variable is displacement field (comp.u), and I suspect this may be the reason for the discrepancy. Is there a proper way to transfer the stress field directly between studies, or is there a recommended approach to ensure consistent stress initialization, for example by transferring the strain instead?


1 Reply Last Post 2026年2月24日 GMT+8 15:55
Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 3 hours ago 2026年2月24日 GMT+8 15:55

Your understanding is correct, and with the same temperature field and displacement field, the stresses should not change.

What material model are you using? If it is a path dependent material, like plasticity, you may need to map also inelastic strains to the next study.

-------------------
Henrik Sönnerlind
COMSOL
Your understanding is correct, and with the same temperature field and displacement field, the stresses should not change. What material model are you using? If it is a path dependent material, like plasticity, you may need to map also inelastic strains to the next study.

Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

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.