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Ansys Learning Forum Forums Discuss Simulation LS Dyna How to decrease the run time for an SPH analysis in LS-DYNA. Reply To: How to decrease the run time for an SPH analysis in LS-DYNA.

ssagar
Subscriber
Thank you jday, interestingly, though, MAT_107 does not converge at the faster loading rate. I already tried using a faster loading rate, however my study involves using SPH (form 8 and 12) to determine the effect of strain rate on the stress vs strain curve of Inconel, and using a reference strain rate, epsilon dot zero of .001 ms-1 (as per my experimental). Any time I increase the strain rate beyond 0.001 s-1, the plasticity algorithm in MAT_107 collapses the curve as soon as the material reaches yield.
Mat_107 is used as my specimens also have different initial temperatures.
A screenshot has been added for clarity.
Apart from the material model failing at faster loading rate, the metal I am simulating is affected by the strain rate.
Any advise on what else can be done to reduce the run time.
Thanks
SS