Title: Robust design strategy applied to a vehicle suspension system with high camber angle tyres

Authors: Estelle Koensgen; Sébastien Berger; Christophe Bouet; Louis Jezequel; Evelyne Aubry

Addresses: Renault SAS/Vehicle Dynamics Research Group, 1 av Golf, 78280 Guyancourt, France ' MIPS, ENSISA – UHA, 12 rue des frères Lumière, 68093 Mulhouse Cedex, France ' Renault SAS/Vehicle Dynamics Research Group, 1 av Golf, 78280 Guyancourt, France ' LTDS – Equipe D2S, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, 69134 Ecully Cedex, France ' MIPS, ENSISA – UHA, 12 rue des frères Lumière, 68093 Mulhouse Cedex, France

Abstract: This paper presents the robust design of a suspension system suitable for tyres whose camber angle can cover a large interval. The originality of this study is to take account of the tyre camber angle within the range (+/−20°) in the robust design of a vehicle suspension system. The methodology is based on the hierarchical organisation of the design process, on simplified models, on sensitivity analysis and on robust optimisation. The paper describes the robust design methods, the modelling of the tyre, the design process and the results. Two models of car tyres valid for high camber angles have been defined. The design strategy based on 'First Design' and 'Rational Design' methods, as well as on the 'Electre' decision-support method, shows its strong potential for finding efficient and robust solutions. The feasibility of integrating an axle into the steering system at high camber angles is demonstrated.

Keywords: robust design; tyre camber angles; vehicle tyres; optimisation; vehicle dynamics; vehicle suspension systems; vehicle design; tyre modelling; design strategy; Electre decision support; axles; vehicle steering systems.

DOI: 10.1504/IJVD.2013.051588

International Journal of Vehicle Design, 2013 Vol.62 No.1, pp.42 - 71

Available online: 23 Jan 2013 *

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