Issue with Contact analysis in Simscape - solid body contact

Anand Varadharajan

2024 7 29

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Hi,

I am trying to simulate a gear pair contact analysis in Simscape where I import the bodies from stl file. Upon simulation, the gear tooth meshings are not happening correctly and I have severe interference. I tried solving the issue with different solvers, but still the meshing is not appropriate. Could you please suggest how I can solve this issue?

Thanks,

Anand

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Yifeng Tang 2024-7-29

I wonder how your geometry is set up. Is each gear tooth a separate part in Multibody or the whole gear is one part? I'm asking because Simscape only support export of convex hull of arbitrary geometry files for contact analysis, so I wonder whether that's the case. I'm not suggesting that you have each tooth as a separate part; that's going to be a LOT of contact force blocks.

One possible solution is to use the point cloud in multibody to represent your gear geometry.

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