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Hello,

I want to do a mechanical 2D-simulation of a section whose temperature field I have determined in an earlier simulation. I cannot couple the heat transfer and the mechanical simulation, due to different dimensions of the two simulations.

I have been able to import my temperature field into COMSOL from an Excel file, as an interpolated function temp(t,r), where t is the time and r = sqrt(x^2 + y^2). Now I just want to have a purely mechanical simulation. I have tried the following: 1. Have a Solid and a Heat Transfer in Solid Model + Thermal Coupling and Thermal Expansion. Problem: a. There is no “Prescribed Temperature Domain” for Heat Transfer that I could apply to have the heat transfer simulation at the same temperature. b. When I set Heat Transfer → Solid1 → Temperature → Userdefined to temp(r,t) this is simply ignored and in the result the temperature is the reference temperature 2. Not having a heat transfer model but only have a Solid Mechanics Model + Thermal Expansion (with coupled Interface Heat Transfer: none) and setting the Temperature of this Thermal Expansion to temp(t,r)

And similar approaches. None of them and are simply ignored. So my humble question:

How to do a pure Solid Mechanic simulation with thermal expansion with given temperature field?

Thanks and best regards

Achim