Dynamical analysis of a duolever suspension system

Part of book or chapter of book English OPEN
Ramirez, C. M. ; Tomas-Rodriguez, M. ; Evangelou, S. A. (2012)

The authors investigate the dynamical behaviour of a Duolever type of suspension on a standard sports motorcycle. The paper contains the modelling aspects of it, as well as the optimization process followed in order to obtain the suspension parameters and geometry arrangements. Head angle, wheelbase and normal trail are studied as indicators of the handling properties of the suspension system. Matlab optimization toolbox was used to design a mathematical model of a duolever front suspension system which keeps its normal trail constant during the full suspension travel. By using VehicleSim software, non-linear simulations were performed on motorcycle model that includes a duolever suspension. By a quasi-static variation of the forward speed of the motorcycle, the time histories of the system's states were obtained. The corresponded root locus to the linearized model were plotted and compared to those of the original motorcycle model without duolever system. A modal analysis was performed in order to get a deeper understanding of the different modes of oscillation and how the duolever system affects them. The results show that whilst a satisfactory anti-dive effect is achieved with this suspension system, it has a destabilizing effect on pitch and wobble modes.
  • References (12)
    12 references, page 1 of 2

    S. Evangelou and D. J. N. Limebeer, “Lisp Programing of the 'Sharp 1971' Motorcycle Model,” 2000.

    S. Evangelou and D. J. N. Limebeer, “Lisp Programing of the 'Sharp 1994' Motorcycle Model,” 2000.

    R. S. Sharp, S. Evangelou, and D. J. N. Limebeer, “Advances in the Modelling of Motorcycle Dynamics,” Multibody System Dynamics, vol. 12, no. 3, pp. 251-283, 2004.

    D. J. N. Limebeer and R. S. Sharp, “Bicycles, motorcycles, and models,” Control Systems, IEEE, vol. 26, no. 5, pp. 34-61, 2006.

    S. Evangelou, D. J. N. Limebeer, R. S. Sharp, and M. C. Smith, “Control of motorcycle steering instabilities,” Control Systems, IEEE DOI - 10.1109/MCS.2006.1700046, vol. 26, no. 5, pp. 78-88, 2006.

    S. Evangelou and D. J. N. Limebeer, “Mechanical Steering Compensators for High-Performance Motorcycles,” Journal of Applied Mechanics, vol. Volume 74, no. Issue 2, p. 15, 2007.

    S. A. Evangelou, D. J. N. Limebeer, and M. Tomas-Rodriguez, “Suppression of burst oscillations in racing motorcycles,” in Decision and Control (CDC), 49th IEEE Conference on, 2010, pp. 5578-5585.

    S. Evangelou and M. Tomas-Rodriguez, “Influence of Road Camber on Motorcycle Stability,” Journal of Applied Mechanics,2008, pp.

    H. B. Pacejka and E. Society of Automotive, Tire and vehicle dynamics. [Warrendale, PA ]: SAE International, 2006.

    29, no. sup1, pp. 280-298, 1998.

  • Metrics
    views in OpenAIRE
    views in local repository
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    City Research Online - IRUS-UK 0 50
Share - Bookmark