The effect of obstacle induced wheel load fluctuations on the lateral force transmission with the Hohenheim tyre model
- Publication Type
- Contribution to conference
- Authors
- Bürger, A.; Böttinger, S.; Kutzbach, H. D.
- Year of publication
- 2016
- Published in
- Proceedings of the 8th ISTVS American Regional Conference
- Editor
- ISTVS
- Conference name
- 8th ISTVS American Regional Conference
- Conference location
- Troy, MI, USA
- Conference date
- 12.-14.9.2016
- Keywords
- Fahrdynamik, Fahrkomfort, Reifenmodell
The Hohenheim Tyre Model was presented as an approach to investigate driving comfort and driving safety of agricultural machinery due to its ability to reproduce tyre passes over obstacles. Model validation in vertical and longitudinal directions was likewise previously presented. The model behaviour in lateral direction is of great interest for the use in driving dynamics simulations. The transmission of lateral forces on uneven surface is a transient process and therefore dependent on time and type of excitation. Wheel load fluctuations occur due to different types of excitation of the tyre. They can be wheel- and track-induced. As special case of track-induced wheel load fluctuations, tyre passes over discrete obstacles can be investigated. In the presented work passes over discrete obstacles with a single tyre are simulated with the Hohenheim Tyre Model. Different characteristics of the lateral force transmission are taken into account by varying the type of obstacle as well as tyre operating factors such as driving velocity and slip angle. The modelling approach is verified by comparing the simulation results to measurements on a single tyre during former research.