In the temperature distribution at 15:40, the two mesh layers in the middle seem to stay at the initial temp of 20 degrees, does this mean that the result is not at a steady state? If so, how to compute the steady state, and why is it different from pure mechanical problems where steady state is achieved at step 1?
I figured that out myself. In static, general step no heat transfer process is computed so the temperature always stays the same as you set it. One way to perform a steady-state thermal-mechanical simulation is to first compute a temperature field in a heat transfer step, then use the .odb output file, which includes the steady-state temperature result, as a temperature load in a static, general step. Yet this approach only applies when the problem can be decoupled. Otherwise the coupled step should be adopted.
@@fanl6572 this is the same question i had, do you know how thermal field is calculated? He doesn't involve thermal equations so how does the solver even know how to interpolate the thermal stress from one wall to the other? It would make sense to do a decoupled analysis or I would understand why this would happen if all material points feel the same deltaT.
you're the best bro, I want to model a special material, known as shape memory polymers, and I found that almost papers published are used USER MATERIALS SYBROUTINES, (UMAT), How can I get your MAIL to ask you about that ?? Thanks in advance.
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In the temperature distribution at 15:40, the two mesh layers in the middle seem to stay at the initial temp of 20 degrees, does this mean that the result is not at a steady state? If so, how to compute the steady state, and why is it different from pure mechanical problems where steady state is achieved at step 1?
I figured that out myself. In static, general step no heat transfer process is computed so the temperature always stays the same as you set it. One way to perform a steady-state thermal-mechanical simulation is to first compute a temperature field in a heat transfer step, then use the .odb output file, which includes the steady-state temperature result, as a temperature load in a static, general step. Yet this approach only applies when the problem can be decoupled. Otherwise the coupled step should be adopted.
@@fanl6572 this is the same question i had, do you know how thermal field is calculated? He doesn't involve thermal equations so how does the solver even know how to interpolate the thermal stress from one wall to the other?
It would make sense to do a decoupled analysis or I would understand why this would happen if all material points feel the same deltaT.
@@dfonseka2120 as I replied to myself earlier. I do not know anything beyond that
Thanks a lot for your perfect and clear Description. Completely Helpful 🙏🙏🙏
I really appreciate your clip! Thank you very much for this video!
Thanks, it is very clear, what about the reference temperature?
Thanks Sir...this is short and sweet..
Thanks. Hello sir , could you please make a video on thermo-mechanical stress on two layered pressure vessel?
you're the best bro, I want to model a special material, known as shape memory polymers, and I found that almost papers published are used USER MATERIALS SYBROUTINES, (UMAT), How can I get your MAIL to ask you about that ?? Thanks in advance.
how to model temperature change with respect to step time?