I am trying to run a simulation in APDL, where I need to give incremental strain rate. I am giving a displacement of 5 units for a beam of length 10. How do we do it in incremental steps?
Hello Aparna, you can divide the whole time of loading into substeps like 20 or as you wish. For that please use the following command:
NSUBST,20,10000,10
If you do so the whole loading is going to be applied incrementally.
It is in effect impossible to apply a certain "strain" rate. unless you are dealing with a simple uni-axial case. You can instead apply a certain "displacement" rate. First, you have to switch to transient analysis : Antype, transient, so that time would then have a meaning. Then you apply the displacement load - say 5 units - , then you give a final time of 5/dr , where dr is the displacement rate (say 0.001 mm / s). As Tammam said it is better use large number of substeps, or better still, try to define the load as a table at small substeps then ansys would interpolate between substeps using that table.
Thank you everyone for the answer. I am using the function parameter to calculate displacement load as displacement rate*TIME. But the simulation is not taking the step time but, the final time, and thus displacement is remaining constant. Can you suggest the probable error ?
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