Hey, guys, I have a problem to get the critical timestep, could you please give me hand? if I need to calculate the critical time step for each time steps, how can I calculate it? >From papers, I found that equation is: critical_time_step=2*sqrt(mass/k),
my questions are: 1. is the mass the particle mass? 2. k here is kn or ks or some other value else? 3. I need to calculate all the critical_time_step for each particle, and then use the mininum one, right? and I hear that in the past, the critical_time_step need to calculated at each timestep, then why and how? if I do it at the beginning and get the mininum critical_time_step, and then keep it as the critical time step for the overall simulation, will it work? Thanks for your help. Kan.
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