Analysing the dynamic behaviour of a suspension is essential to achieve the best relationship possible between the ride comfort and the handling. In the past, much effort was spent in investigating the dynamic transmission behaviour of a suspension on a test rig. The majority of these test rigs allow only a vertical deflection. However, the longitudinal direction becomes increasingly important when optimizing the ride comfort on uneven roads. This study investigates the various possibilities for identifying the longitudinal dynamic behaviour and the bump sensitivity of a suspension, by means of a completely rigid clamp acting on a motionless tyre or a stiff dummy wheel. Furthermore, excitations superimposed on the suspension are investigated in detail followed by a parameter study to discover their influence on the longitudinal transmission behaviour of the suspension. Additionally, the results of multi-body simulations are compared with the real measurements. The adopted approach enables the influences of different suspension parameters to be analysed and evaluated on a real suspension test rig and a virtual suspension test rig, in connection with a tyre or for a stand-alone axle.


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    Title :

    A new method for studying the longitudinal dynamic behaviour of a suspension on a test rig




    Publication date :

    2016



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    RVK:    ZO 4200: / ZO 4200
    BKL:    55.20 / 55.20 Straßenfahrzeugtechnik
    Local classification TIB:    275/7025



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