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Modeling complex tyre - road

Modeling complex tyre - road

Modeling complex tyre - road


We're modeling the suspension of a F.Renault race car. As this is no ordinary suspension we couldn't use the Suspension interface. We finished the model and attached wheel bodies to the knuckles. But now we're having some problems getting the vehicle on the road..

When we add a road element to the analysis case and then add 4 Complex Tyre force elements (where we enter the Road Function as an input as suggested in tutorial 4 'Complex Tyre'), we can't keep the vehicle on the road. It falls down like a brick. Apparently the vehicle isn't positioned correctly with respect to the road element, or we did something wrong defining the different elements..

It's probably hard providing us with an answer, but could someone give us some tips we have to pay attention to? Or a good, clear, explaining manual or tutorial..

Thank you very much

Yours sincerely


RE: Modeling complex tyre - road

We're using the LMS Virtual Lab.Motion software.

Best regards


RE: Modeling complex tyre - road

Problem solved!

Apparently every tyre element is defined to rotate around the z-axis.
When defining these axis systems we used the conventional SAE convention and put the z-as vertical. This caused an incorrect positioning of the tyres with respect to the road element, what made the vehicle 'drop' under the road.
With the new axis systems, the vehicle stands stable on the road element.



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