Rigid body objects passing through each other

Question

I am experimenting with rigid body physics using the game engine for a project.

This is the setup:

• I have 2 long rectangular prisms with hole.
• The 2 prisms are connected with a cylinder (acting as a dowel).
• I locked translation and rotation for one of the prism and everything else is free to move and/or rotate.

And here's the problem:

The dowel and the free prism are going through the locked prism. Can someone please tell me what am I doing wrong? Thanks.

Here is the blend file: https://www.dropbox.com/s/o2y0pxk7ijk12bc/untitled.blend

Answer 1

There are several problems in this file:

1. Objects scale hasn't been applied;
2. Setting Triangle Mesh here is required, since the prisms have holes, which means they are concave objects, so other collision types don't work well with them;
3. Bound margin should be tweaked carefully, as well. Considering the distance between the surface, try smaller value;

4. The two prisms stay too close to each other, which will cause "intersection" if bound margin is non-zero.

   Demo file_v3. Just FYI.

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Added a demo video for better understanding.