Learning Forum

[Jake Chapple]

I have a simulation where I have a steel ball (radius of 10 mm, rigid steel material) that collides into a PLA plate (20mm thick) at 400 m/s. I have a automatic_surface_to_surface contact. However, the ball simply phases through the PLA and doesn't show any deformation, but it does show stresses as if it hit.

[Puneeth Bagaria]

 

Hello,

Since the velocity is very high, I would first suggest to check if the timestep of the simulation is reasonable. If so, you may try to use a different contact formulation (SOFT parameter). It controls the stiffness of the contact (and also changes a few more things)..

 

[Jake Chapple]

The timestep is 0.001 ms. I'll try to resimulate with a lower timestep.

[Jake Chapple]

So I've done some trial and error and I've found the reason it wasn't simulating deformation is because of the material. I copied the same material inputs from a tutorial, which was aluminum (my PLA and this aluminum use the same type of material, Power Law Plasticity, but different inputs) and the simulation worked correctly.