History variable plot in Paraview Feap 8.6

[user2705]

Dear,

I am currently using FEAP 8.6 and need to export history variables from my user element to Paraview. With command PVIE, the values of history variables are not being displayed in Paraview, i.e. they are displayed as zeros.

I probably have to add something in my user element, but I cannot find what. Could you please give me instructions. Before, I used uplot9, umacr9 and uparaview which were modified to plot history variables in Paraview.

Best regards and thanks in advance

[Prof. S. Govindjee]

In a user element you will need to project your Gauss point values to the nodes in the same way that you project your stresses.

If you are using a user constitutive model with a FEAP built-in element, then you need to provide the HIST PLOT lines in the material cards; see section 15.2.7 of the user manual.

[user2705]

Dear Professor,

Thank you very much.

Best regards

[user2705]

Dear Professor,

I have added this in isw .eq. 8.

However, is there any way to plot history variables without extrapolating to the nodes. I have some switches in my user element (value 1 or 0) which shows whether my element entered softening phase or not.

Best regards

[Prof. S. Govindjee]

If you do not want the stress values smoothed across element boundaries you can try plotting with the ESTRess.  Give that a try to see if does what you want. The manual indicates this only works in 2D but I am unclear if that is still true.  The other option would be to modify the paraview output file and write out cell (i.e. element) values followed by using paraview to perform the visualization.

[user2705]

Dear Professor,

It works with ESTRess. I will also try to do implementation in Paraview.

Best regards and thank you very much.