How do I make physics objects not overlap

Hi, here is my problem. I have a tank that at max speed destroys crates, but when I move slower I have the crates bounce off the tank. This works great. The issue is when I move the tank against the crate when its next to a wall they all bunch up and overlap, then slowly pop up like an accordion. How can I get crates that are squished between the tank and the wall to destroy? Or destroy crates that get stuck under my tank when squeezed against a wall? Thanks

If your walls, crates and tanks are rectangular, you can do it with some calculations - check the distance between the tank and the crate and between the crate and the wall, to determine if the crate is squished. Then destroy it.