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




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    Local classification TIB:    535/7020
    BKL:    55.20 Straßenfahrzeugtechnik / 50.32 Dynamik, Schwingungslehre / 50.32 / 55.20



    Design of passive vehicle suspensions for maximal least damping ratio

    Smith, Malcolm C. / Swift, Stuart J. | Taylor & Francis Verlag | 2016

    Free access

    Design of passive vehicle suspension for maximal least damping ratio

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


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


    Optimization of passive and active vehicle suspensions

    Segl'a, S. / Wydzial Mechatroniki Politechniki Warszawskiej | British Library Conference Proceedings | 1997