Authors: Terje Rølvåg
Addresses: Department of Engineering Design and Materials, NTNU, Richard Birkelands veg 2B, N-7491 Trondheim, Norway
Abstract: The primary objective of this study is the development of a robust numerical simulation model that captures the dynamical characteristics of the Ilmor X³ 2007 MotoGP racing bike. This model can be reconfigured to vary the weight distribution, the stiffness and the damping properties that affect wheelies and stoppies. The model includes tyre models, the driveline from the engine to the rear wheel and a steering system to control the bike in ride simulations. Sensitivity simulations are performed to study the effect of different bike configurations on wheelies and stoppies, i.e., the front and rear wheel lifts that occur during maximum acceleration and braking of the bike. Various modifications are made to the FE-based simulation model to investigate the effect of these changes on the ride behaviour.
Keywords: racing bikes; finite element analysis; FEA; modelling; numerical simulation; system dynamics; control systems; MotoGP; motorbikes; bike testing; weight distribution; stiffness; damping; tyre models; driveline; steering systems; motorcycle racing; wheelies; stoppies; front wheel lifts; rear wheel lifts; acceleration; braking; ride behaviour.
International Journal of Vehicle Systems Modelling and Testing, 2015 Vol.10 No.1, pp.74 - 106
Received: 21 Feb 2013
Accepted: 03 Feb 2014
Published online: 13 Feb 2015 *