Dynamic systems which are composed of interconnected subsystems are subject to dynamic 'constraint equations' which are independent of the nature of the interconnections. A dynamic constraint equation is developed for a 1/4 car model of an automotive suspension, it is shown that only one of the three transfer functions (acceleration, rattle space, and tire deflection) can be independently specified and that the first two contain 'invariant points' at frequencies within the frequency range of interest. These constraint equations lead to conclusions with respect to trade-offs between the three transfer functions. Improvements in all three can be obtained near the unsprung natural frequency: however, severe trade-offs are shown to exist at all other frequencies.


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    Title :

    Invariant properties of automotive suspensions


    Additional title:

    Unveraenderliche Eigenschaften von Kraftfahrzeugfederungen


    Contributors:
    Hedrick, J.K. (author) / Butsuen, T. (author)


    Publication date :

    1988


    Size :

    8 Seiten, 9 Bilder, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Invariant properties of automotive suspensions

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