One-way coupled problem

[Akshay Bhardwaj]

I am trying to solve a one-way coupled thermo-mechanical problem in
FEAPpv. For this purpose, I would like to first perform a thermal and
then use the nodal temperature values to perform the structural
analysis.

I would like to know how to save nodal temperature value in a file
which then can be read during the structural analysis. Also, do I have
to write two separate input files, one for the thermal analysis and
one for the structural analysis or can I do both the analysis
sequentially using one input file.

[Prof. R.L. Taylor]

FEAPpv does not allow this easily.  However, you should be able to solve the problem for a linear elastic material by
performing iteration on the coupled problem.

[Prof. S. Govindjee]

As Prof. Taylor says it will not be automatic.  You can solve a thermal problem and then print all the temperatures to the output file disp,all.  You can then process those and convert them to nodal temperatures that you place under a TEMP command in new input file that has the material as an elastic material.  You will then get the thermoelastic (one-way) coupling.

[Akshay Bhardwaj]

Thank you, Prof. Govindjee. I  implemented your suggestions and solved the problem. Thanks a lot for your reply and help.

[Akshay Bhardwaj]

Thanks a lot, Prof. Taylor, for your reply and help.
Prof. Taylor, can you please elaborate a bit more on what you said above. I am not very clear with what you mentioned.

[Prof. R.L. Taylor]

If you replace the file solid2d.f in ./elements/solid2d and use the attached file you should be able to solve the one way coupled problem without the need to import the temperatures.  See if it works?  Note that some commands in the solution file will be ignored as they only work in FEAP.

[Akshay Bhardwaj]

Thanks a lot, Prof. Taylor, for your prompt reply.
Sir, I will try what you recommended. I will get back to you with any update on this. Thanks again, Sir.