Upgrading of the Hohenheim Tyre Model to a radial approach for the simulation of obstacle passages

Publication Type

Contribution to conference

Authors

Witzel,P.; Böttinger,S.

Year of publication

2011

Published in

VDI Berichte

Pubisher

VDI-Verlag GmbH , Düsseldorf

ISBN / ISSN / eISSN

978-3-18-092124-2

Page (from - to)

431-437

Conference name

VDI-MEG Tagung Landtechnik

Conference location

Hannover

Conference date

11.-12.11.2011

Keywords

Reifenmodell

The Hohenheim Tyre Model has been developed to investigate driving dynamics of vehicles
equipped with high volume, agricultural tyres. Tyre-ground interaction is described by means
of a point contact.
In order to simulate the passage of obstacles, the model structure has been revised. The
new model can be classified as an adaptive footprint model and is capable to describe the
tyre-ground interaction in greater detail. It consists of radially arranged Voigt-Kelvin elements
that are interconnected by interradial springs. The longitudinal model of the existing
approach is inherited to simulate traction forces. The radial elements rotate according to the
angular velocity of the wheel. Therefore, the interaction with the obstacle can be depicted
realistically. Furthermore, the displacement of the wheel load and thus the occurrence of the
rolling resistance can be described.