Reply To: Particle Impact Simulation Help

[Jim Day]

For high velocity impact, you may need to reduce the time step as the default time step does not take into account initial velocity.   Distance traveled will be 

x = v dt

Let v be the initial velocity, x be some small fraction of your element size, say 1/100th the element size, and dt be the time step size you should not exceed.   You can use a curve (variable LCTM in *CONTROL_TIMESTEP) to set a cap on the time step size.