Building AutoTire Test Rig using the Assembly Wizard

Using the Tire Test Rig, you can test the tire component of you model by running it under various conditions of Lateral slip, Longitudinal slip, and vertical loads.

Among the various objectives of the test rig, one of them is to cross-check the performance of the tire models against their property files.

While building the test rig, you can choose the AutoTire option to build a Tire Test Rig.

Figure 1. Building a Tire Test Rig


Figure 2. Test Rig Topology
The tire test rig consists of:
  • Rig body: This is the main structure that supports the tire. This is also the part that forces translational and camber motion to the tire.
  • Carrier: The carrier holds the hub and can impose toe/steer and vertical motion to the tire.
  • Wheel hub: The AutoTire is attached to this part. Wheel hub acts as the spindle for the tire and this is mounted on the carrier with a revolute joint. Spin motion on the tire is imposed using this revolute joint.
Note: In the test rig, the tire is moved on the road along its surface, while the road is stationary. In Lateral Slip and Vertical Load tests the wheel rolls freely and in Longitudinal Slip a spin motion is imposed on the wheel.

Dimensions of the Test Rig

The test rig is parameterized with respect to the “Road_ref_marker”.

Figure 3. Road_ref_marker
The general dimensions of the test rig can be controlled using the “Test Rig Dimensions” dataset/form.

Figure 4. Editing Test Rig Dimensions

Choosing a Tire Model to Test

You can test any tire model that is supported in MotionSolve.

The default can be edited by browsing to the necessary tire and road property file in the AutoTire panel.

Figure 5. Choosing a Tire/Road Property File
Note: The test rig has been designed for testing tires on flat roads only.