Integrating Stresses to get Forces in ANSYS

[abusementpark]

Can anyone help me with integrating stresses over surfaces to get a resultant force in ANSYS?

I have a I-beam model built out of SOLID45 elements and I want to determine the total forces in the flange,web, etc.

 

[Drej]

ANSYS already has built-in commands for this purpose. Check out the NFORCE series of commands but be careful of the usage, particularly when outputting for a selected set of nodes - the manual explains.


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[abusementpark]

Drej,

Thanks for pointing that command out to me. I have used it but I am getting very unreasonable results. For instance, I selected a line of nodes along the web of my beam and it was telling that the total shear forces going through the web was a very small number (10e-4 in magnitude), when I know the force should be around 60 kips.

Can you elaborate on how one should be careful of the usage? I don't see anything significant in the manual.

Thanks a lot.

 

[Stringmaker]

You have to select the structural elements associated with the nodes as well! Only select elements on one side of the section though. For instance:

nsel,,,,beamsectionnodes
esln

 

[jiligeo]

Hi, you can also use Fsum command.

 

[omidomidi]

instead of integrating stress for calculating force you can gain nodal forces from general post proc and add them to have the total force