Bouncing/Sinking Phenomenon - Project Chrono
I have been trying to simulate collision between two bodies in the case where one body is located inside a hollow body in 3D
In a 2 sec simulation, where a body with no constraints is simply left to fall inside the hollow body. A cross sectional view. It is actually a cuboid inside a cylinder.
However, what I am observing is that for the first few times it makes contact, it behaves nicely (bounces) but when it finally stops moving, it suddenly looks like it sinks into the other body.
Plotting the heave motion of the red body, we see that for the first few times, it behaves nicely but after 0.6 s, it starts sinking into the ground.
At the end of simulation
Any ideas on what might be the issue here? I have attached the XML file and both the STL files.