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How to create contact between wheel and floor while making the wheel roll on the floor ?

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Hello ther,
I created a simplified CAD Model of a car suspension and have been trying now to create a contact between floor and Wheel and to make the wheel roll on the floor.
(Note: The CAD Model was created in SolidWorks and then exported to Simscape. This way i got an automatic generated block diagram)
For the contact i downloaded the "contact forces library" and added the sphere to plane contact to the block diagram.
Here are my questions:
  • Could the spatial contact force be a better fit than the sphere to plane contact?
  • How to connect the blocks so that only the wheel rotates and not the entire suspension?
In the beginning the ease the understanding, I tried to make a simple ball roll on an even floor. But it's just jumping on its own. Why and how to make it just roll on the even floor . (See attachement Kugel_Flaeche2)

Accepted Answer

Juan Sagarduy
Juan Sagarduy on 26 May 2021
Hi there
Definitely, using the spatial force contact block would be the best option. See the submission below with an implementation of a similar problem.
https://se.mathworks.com/matlabcentral/fileexchange/55478-electric-vehicle-rolling-over-uneven-terrain
Br Juan

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