Modelica Library for Modeling Wheels and Tires

Introduction

WheelsAndTires offers a set of modules that support the modeling of wheels and tires in an object-oriented manner. To this end, models of different degrees of complexity are being offered.

The library contains furthermore a series of application examples that demonstrate how these modules can be used.

The library has been built on bond graph technology. For this reason, the libraries BondLib and MultiBondLib are also required.

Historical Development

There exist already a number of different Modelica libraries for modeling tires. Unfortunately, all hitherto available tire libraries are commercial libraries that are therefore not suited for academia.

The earliest tire library for Modelica was developed by Dirk Zimmer during a practical stage that he spent at DLR in Oberpfaffenhofen. That library hadn't been built in a fully object-oriented manner yet, i.e., although the library featured tire models of varying degrees of complexity, each of these models was internally built in a monolytic fashion. The library was never released by DLR, and therefore, is not available for general use.

The new tire library is based conceptually on the library developed earlier by Dirk Zimmer; however, it has been rebuilt from scratch and was furthermore entirely restructured in an object-oriented fashion, such that different partial models are now available for the description of different aspects of tire modeling, such as geometry and friction, for example. These partial models can be combined in an arbitrary fashion to obtain full tire models.

Most Important Publications

Andres, M. (2009), Object-Oriented Modeling of Wheels and Tires in Dymola/Modelica, Mechatronics Program, Vorarlberg University of Applied Sciences, Dornbirn, Austria.
Andres, M., D. Zimmer, and F.E. Cellier (2009), Object-Oriented Decomposition of Tire Characteristics Based on Semi-empirical Models, Proc. 7^th International Modelica Conference, Como, Italy, 10 pgs.

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