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Hello everybody,

I have a problem with a Comsol model. I have two heat transfer Modules. The first module is used, to compute the heating phase of a to be simulated SLM-process. There shall be a displacement due to the heat during the heating phase, but the there shall be no stress at the start of the cooling phase in the area of the powder and the molten material. Therefor the second heat transfer module ist used with a different starting temperatur. The starting temperature shall be the end temperature of the first heat transfer module. Therefor I set the starting temperature of module 2 to T2 = T. The problem is solved in two study steps, one for the heating phase and one for the cooling phase with segregated solvers. The study steps contain different time intervalls for the heating an cooling phase. The heating phase seems to be calculated correctly. When the cooling phase starts to compute, the temperature of the heating phase does not get handed over to the second module. Instead a start value of 0 K seems to be used.

I started using Comsol just a few weeks ago, so I'm relatively new to the software. I'd be thankful for every hint or advice.