Hello,
Have recently started using non-linear simulation - i have set the new material properties for young's modulus e.t.c,
I set a time curve before starting the simulation but am struggling to find the permanent displacement results/ displacement when the load is removed???
Any help?
Thanks,
James.
As long as you have a stress-strain curve that represents some permanent-set when the structure is unloaded (plasticity-von Mises or Tresca), it only sounds like you need to add the "unloading" portion of the time curve. Typically you can ramp-down the load to zero on the same curve as for ramping-up the load. Then you can plot the deformation at the end of the analysis when the load is at zero, and you should be able to observe a permanent-set (or residual strain) in the structure. Hope that helps.
Hi anthony,
I have set the stress-strain values for yielded steel & i have unloaded the time-curve, i just can't figure out how i see the permanent displacement results?
Hi James: When you plot displacement (for example) it is supposed to have an option in the PM to choose the step at which you desire displacement. There should be a spin-box adjacent to it, that you can increase until it gets to the last step in the analysis. Then choose "OK" and it should show the displacement field all over the model (in color) at the last step, which presumably is the point at which the applied loads are zero. Does that work on your system?
Hi James: When you plot displacement (for example) it is supposed to have an option in the PM to choose the step at which you desire displacement. There should be a spin-box adjacent to it, that you can increase until it gets to the last step in the analysis. Then choose "OK" and it should show the displacement field all over the model (in color) at the last step, which presumably is the point at which the applied loads are zero. Does that work on your system?