Learning Forum

[filippobarbagelata07]

Greetings to everyone,

I'm recently sruggling with the MAPDL post processing commands, I included a command block in the result tab of the mechanical simulation tree executing commands after the /post1 apdl command.

I'd like to modify the resulting stress value of nodes that exeed a certain value with the *DNSOL command but I can not extract the stress values from any node using the *GET command.

How can I get the equivalent stress values at the nodes? I need it in order to select all the nodes with a greater stress value then a prescribed value and modify it

Thanks to anyone who will reply

[Deepak]

Hi, 

*GET - used to define scalar parameter

*VGET - Retrieves values and stores them into an array parameter, the below code helps in extracting the equivalent stress values of all nodes and stores them in the VOM_STRESS parameter.

*VGET, VOM_STRESS, NODE,0, S, EQV.

Then you may use the *IF and *DO loop to extract the data from the VOM_STRESS array for the nodes whose stress value exceeds the prescribed value.

 

Reference links: *VGET; *IF; *DO

 

Thanks,

Deepak

[filippobarbagelata07]

ok, thank you for your help, the code now works fine replacing the results i want to edit with the *VPUT command, now I have another problem. I need to update the equivalent stress plot to show the edited results to perform a fatigue analysis. Is there a command that can do such thing?

[Deepak]

Hi,

Please look at these KM, maybe these will be helpful to you,

How to plot user define result in APDL for (2^(P1) P1 =Principal Stress | Ansys Knowledge

Thanks,

Deepak