March 31, 2022 at 9:41 amgh21502Subscriber
I have subjected a 3D structural model like a beam, the end surface is fixed and the opposite surface has forced displacement for tensile.
Thus, I want to get the reaction force at all nodes included on a surface tensile, but the included nodes are approximately 1900.
A conventional manner I use is like the following commands,
however, this method is so heavy task for this model as the nodes are so many.
If you have a convenient method to sum the reaction forces at all nodes on a surface, could you teach me?March 31, 2022 at 12:52 pmErik KostsonAnsys EmployeeHi
See the FSUM command (apdl) which sums up the forces.
All the best
March 31, 2022 at 1:46 pmgh21502SubscriberThank you for your answer ekostson.
I apologize that my explanation wasn't enough.
I did not know about the FSUM command, so I tried it and found it useful. But it doesn't seem to meet my requirements this time.
I have to get the changes in reaction force over time, so valid command is probably needed in /post26.
March 31, 2022 at 1:50 pmErik KostsonAnsys EmployeeNo worries.
Use the SET command to set the time step to look at, and then issue the FSUM to get the reaction sum at that time step.
Do that for different time steps by setting that in the SET command.
With the SET we can also issue the *GET (we can use FSUM with *GET see apdl command reference for details), and then write the reaction at a certain timestep to an array (*DIM).
All the best
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