Thermal-structural Analysis in Ansys

[bodi79]

I performed thermal analysis. I checked the results and found them as expected. I saved the file with a new name, then I converted the thermal elements to structural ones. Finally, I applied temperature loads from thermal analysis, by selecting the thermal file.rst. The problem that when I list the body loads on joints or elements I find nothing. When I solved the problem, I found the results equal zero. This means that the temperature loads were not transferred to the structural file.
Can anyone tell me what might have caused this problem.
Thanks.

 

[0rel]

How did you write the command to transfer the load ?

 

[bodi79]

Thanks for your reply.
In fact I use GUI, I don't use the batch (command method). In the GUI, I select
Define Loads> apply> structural> Temperature> from therm Analy> then I select the load step and the file name and extension (Therm.rst).
I think this is equivalent to LDREAD, TEMP, 1, 1, , ,Therm,rst,--

 

[0rel]

Try using the apdl command setting the KIMG key to 0 (body load).

Check your therm results extension, if I remember well, some thermal analyses give .rth file, if so, just /rename,therm,rth,,therm,rst

It might not help though, but I also had problems with loads transfert, and setting KIMG to 0 solved them.

 

[bodi79]

Hello Orel,
My model consists of coli, shell and beam/link elements.
I used the command "LDREAD, Lab, LSTEP, SBSTEP, TIME, KIMG, Fname, Ext," using different values for KIMG (0, 1, and 2). In all cases only the shell element results were transferred as body loads on the elements (not nodal loads) and nothing where transferred neither to the solid nor to the beam elements.
The thermal model gives me the results already in .rst file. However I converted it to rth file. I used both to transfer the loads none of them solved the problems.
As you expected KIMG didn't solve the problem. I think that the only solution that I have is to apply the temperature manually to the nodes in the structural mode. Though this seems to be very time consuming, I don't have alternative solution.
Thank you, I apprecite your help.
Regards