Finite element method has been used for modal and vibration / stress analysis of a passenger vehicle. The study vehicle has been discretised taking into account the chassis elements, axles, suspension and tyres. The Lanczos method has been successfully used for the modal analysis. The power spectral density (p.s.d.) of acceleration of a track measured by using three height sensors has been fed as input to the tyres and the dynamic response of the vehicle in terms of acceleration and strain has been computed at all the nodes using finite element modeling and the random vibration concept. The experiments were carried out using piezo-electric accelerometers and strain gauges to measure the vibration and strain levels at critical points of the vehicle. The vibration and strain levels calculated through f.e.m. match well with the experimental values. Parametric study has also been carried out with a view to find the optimum suspension / tyre characteristics for maximum ride comfort in the vehicle.


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    Title :

    Modal and Vibration / Stress Analysis of a Passenger Vehicle by FEM


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Symposium on International Automotive Technology (SIAT99) ; 1999



    Publication date :

    1999-01-13




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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