Animations
Some Animations and application examples of the Hohenheim Tyre Model.
Test tractor during severe lane change
Test tractor with trailer during severe lane change
You can see to overlaying animations of a severe lane change for two variation of the setting of the follow-up axle. For the solid vehicle, this axle is locked.
Obstacle pass
Animation of an obstacle pass with the Hohenheim Tyre Model (spoke approach).
The slip is continuously increased from -40 % to +40 %. During this process different normal force distributions are developed in the tyre contact patch. This leads to variation of the point of action of the resulting wheel load (lever of the wheel load).
The course of action is analogous to the video above. Here, the shear forces in the contact patch are visualised.
The animation shows the behaviour of the tyre model in a topview. Amongst others, the lateral shear forces in the tyre contact patch are visualised.
The following operational conditions are presented:
- Stationary steering up to a steering angle of 15°
- Acceleration to 2 km/h (no slip angle)
- Gradually increasing the slip angle to 5° (between 10 s and 14 s). A triangular lateral force distribution is visible.
- Further increasing the slip angle to 25° (from 17 s). The result is a parabolic lateral force distribution in the tyre contact patch. The realigning torque decreases.
The red line plot shows the calculated realigning torque and is plotted on the second y-axis. Additionally, the resulting lateral and vertical forces are shown.