In 1934 M. Olley suggested, in his paper “Independent Wheel Suspensions - Its Whys and Wherefores”, that a rear axle stiffness slightly higher than proportional to rear axle load would give improved comfort.By the introduction of body fixed coordinates a velocity dependent damping factor occurs in the equations of motions. That factor has been named inertial damping.The linear study of the parameter space shows that a stiff front suspension will cause a separation of the damping of the body eigenfrequenciesat increased vehicle velocity. On the other hand, and this was the conclusion of Olley, a soft front suspension will cause a separation of the frequencies at increased velocity.As the system dampings and the natural frequencies in most cases vary with the velocity of the vehicle the stability margin should be checked.The theoretical results indicate that good ride forwards can cause bad ride during reverse driving.The non-linear study indicates that the linear study is conservative regarding the critical velocity.Introduction of the momentum of the vehicle in the dynamic analysis will deepen the understanding of vehicle dynamics and improve future suspensions.


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    Title :

    Inertial Damping - A Vehicle Suspension Design Tool


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Truck & Bus Meeting & Exposition ; 1991



    Publication date :

    1991-11-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


    Inertial Damping- A Vehicle Suspension Design Tool

    Wennerstroem,E. / Royal Institute of Technology,SE | Automotive engineering | 1991


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