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

Publikations-Art
Kongressbeitrag
Autoren
Witzel,P.; Böttinger,S.
Erscheinungsjahr
2011
Veröffentlicht in
VDI Berichte
Verlag
VDI-Verlag GmbH , Düsseldorf
ISBN / ISSN / eISSN
978-3-18-092124-2
Seite (von - bis)
431-437
Tagungsname
VDI-MEG Tagung Landtechnik
Tagungsort
Hannover
Tagungsdatum
11.-12.11.2011
Schlagworte
Reifenmodell
Abstract

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.

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