Bill Bulat
Ansys Employee
The net tire reaction can be obtained in a static analysis. Apply the centripetal acceleration (an inertial body load) acting in a direction lateral to the car.
nnConstrain the surface of the tires that contacts the road. Drag and drop the constraint (which appears in the Analysis branch of the tree) into the Solution branch. After solving, this will provide the net reaction force at the constraint in Details. nA higher fidelity analysis including the effect of increasing tire contact area due to the overturning moment could be obtained by modeling the tires. The pressurized air inside them could be represented with hydrostatic fluid elements. There is a hydrostatic element extension available on our customer portal that simplifies the setup of such models (hydrostatic elements are not natively exposed in Mechanical). You might model a portion of the road under the tires and use rough contact between the tires and the road to obtain a more realistic distribution of the contact pressure and lateral traction forces. If you're going to include this effect, some modeled representation of the suspension should probably be included as well.nn