Title: A ride comfort tyre model for off-highway vehicles

Authors: Thomas H. Langer; Thorkil K. Iversen; Ole Ø. Mouritsen; Morten K. Bak; Michael R. Hansen

Addresses: Research & Development Department, A/S Hydrema Produktion, Gl. Kirkevej 16, 9530 Støvring, Denmark ' Research & Development Department, A/S Hydrema Produktion, Gl. Kirkevej 16, 9530 Støvring, Denmark ' Department of Production and Mechanical Engineering, Aalborg University, Fibigerstræde 16, 9220 Aalborg East, Denmark ' Department of Engineering, University of Agder, Postboks 509, 4898 Grimstad, Norway ' Department of Engineering, University of Agder, Postboks 509, 4898 Grimstad, Norway

Abstract: Tyre modelling is a major challenge when using time domain multibody simulation models to evaluate ride comfort on off-highway commercial vehicles. Further, parameters for these big tyres are difficult to obtain and thus, commercial car tyre models are difficult to apply. In this research work, a simple vertical tyre model for off-highway ride comfort evaluation is suggested. A displaced volume approach has been developed and combined with the slip theory to yield a tyre model that can be characterised by only three parameters. Full scale measurements on a dump truck have been carried out. Force responses from measurements are compared to the simulation results. Acceleration responses and the level of wholebody vibrations have also been compared.

Keywords: tyre modelling; whole-body vibration; ride comfort; off-highway vehicles; vehicle dynamics; multibody dynamics; simulation; vehicle design; vehicle vibration; dynamic modelling; dump trucks.

DOI: 10.1504/IJVD.2014.060773

International Journal of Vehicle Design, 2014 Vol.65 No.2/3, pp.222 - 240

Accepted: 15 Feb 2013
Published online: 28 Apr 2014 *

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