Reading a .frd file

General Questions
1

Dear PrePoMax Forum,

When I view the PrePoMax simulation results, the contour plot indicates the nodes for max stress and max deflection depending on which item I select in the results display pane (not sure if I am using the correct nomenclature).

If I open the .frd file for the same analysis in Notepad, I am able to correlate the numbers in the .frd file with the graphics display in PrePoMax.

CAN I CONFIGURE THE .FRD FILE TO ONLY DISPLAY MAX VON MISES STRESS AND MAX DEFLECTION?

CAN I CONFIGURE THE .FRD FILE TO CALCULATE THE RESULTANT MAX DEFLECTION?

For example,when I view the results contour plot for max stress S11, it shown that this occurs at Node id 17723.

When I look at the .frd file, I can locate node 17723 and verify that S11 = 5.49197E+04.

When I look at the contour plot for max deflection, it show that this occurs at Node id 6447. If I locate Node id 6447 in the .frd file, take the 3 components of deflection (dx, dy, dz) = (8789.13, -111631, -8297.21), and then calculate the root sum squares, I do get 1.123E05.

2

If you want to modify the .frd file directly (so that it consist only of two entries (node with max stress and node with max displacement with their values) or includes resultants), it might be better to ask on the CalculiX forum: https://calculix.discourse.group since that would require changing the CalculiX source code. You can find some information about the .frd file format in this document (page 140, chapter 11. Result Format): https://www.dhondt.de/cgx_2.21.pdf

3

Dear Jakub,

Thank you very much for your prompt reply.

–Neal

4

Why do you need such an output?

5

I would like to complete some other calculations and comparisons and I would like to have access to that data.

–Neal

6

In the newest version you can export History outputs to a .csv file. Would this help?

7

Dear Matej,

Thank you for your reply. I will “play” around with this and see if it provides better “accessibility” to the data (rather than searching and parsing throught the .frd file).

–Neal