This paper studies the use of the least damping ratio among system poles as a performance metric in passive vehicle suspensions. Methods are developed which allow optimal solutions to be computed in terms of non-dimensional quantities in a quarter-car vehicle model. Solutions are provided in graphical form for convenient use across vehicle types. Three suspension arrangements are studied: the standard suspension involving a parallel spring and damper and two further suspension arrangements involving an inerter. The key parameters for the optimal solutions are the ratios of unsprung mass to sprung mass and suspension static stiffness to tyre vertical stiffness. A discussion is provided of performance trends in terms of the key parameters. A comparison is made with the optimisation of ride comfort and tyre grip metrics for various vehicle types.


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    Title :

    Design of passive vehicle suspensions for maximal least damping ratio


    Contributors:

    Published in:

    Vehicle System Dynamics ; 54 , 5 ; 568-584


    Publication date :

    2016-05-03


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Design of passive vehicle suspension for maximal least damping ratio

    Smith,m.C. / Swift,S.J. / Cambridge Univ.,GB | Automotive engineering | 2016


    DAMPING IN SUSPENSIONS

    O'CONNOR, B. E. | SAE Technical Papers | 1946


    Simulation-based analysis and optimal design of nonlinear passive vehicle suspensions

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    Performance benefits in passive vehicle suspensions employing inerters

    Smith,M.C. / Wang,F.C. / Cambridge Univ.,GB et al. | Automotive engineering | 2004