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Contact Modelling: Possible to model a vehicle driving over an 'obstacle course'?

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Rory Butler
Rory Butler on 6 Sep 2019
Answered: Juan Sagarduy on 31 Mar 2021
Hi,
I am trying to model the contact between a vehicle and the ground, however the 'ground' has curves and changes gradients etc. Is there a way to provide a contact between the wheels and the entire surface regardless of if its just a flat plane?
In the picture below I can I only model the contact between that single plane. I want the entire light red colour to be a contact point.
contactmodelling.jpg
  1 Comment
Kristian König
Kristian König on 29 Mar 2021
Hi Rory,
I have the same issue. Have you already solved the problem?
Thank you and kind regards,
Kris

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Answers (1)

Juan Sagarduy
Juan Sagarduy on 31 Mar 2021
Hello Rory
I'd like to give this question a shot. The contact between the tires and uneven terrain can be modelled in the latest releases for Simscape Multibody. You extract the geometry from all bodies and the spatial force contact detects that. However, the terrain is an irregular volume and the convex hull approximation might not give you good enough resolution.
in 2021a, we have added the point cloud block, which can create a mesh around the volume with a suitable number of nodes. that can be really helpful to try out.
I add a link to a submission where you see how an STL file for the terrain is brought to Multibody to simulate the run of a simple vehicle. As you can see, the terrain is roughlt approximated.
Good luck / Juan

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