It is generally recognized that a composite dynamic impedance method using component frequency response functions obtained experimentally is an effective procedure for analyzing complex dynamic systems extending over a wide frequency range. However, previous attempts to apply composite dynamic impedance methods to analyses of dynamic systems involving multiple connection degrees of freedom for several components have been largely unsuccessful because of numerical error that occurred in the matrix inversion process. In an effort to avoid this problem, researchers at Structural Dynamics Research Corp. have recently proposed an improved composite dynamic impedance method known as SMART, an acronym for System modelling and analysis using the response technique. SMART incorporates the singular value decomposition (SVD) theorem as a numerical technique for reducing error in matrix inversion.Another approach that has frequently been used to avoid the above-mentioned problem is the complex vector method, which provides a simple technique for making approximate dynamic response predictions. The complex vector method ignores the dynamic coupling among connected components and so does not require matrix inversion. In this paper, SMART and the complex vector method are applied to an actual vehicle problem and the simulation accuracy of each method is confirmed, dependant upon the degree of dynamic coupling between components. It is shown that efficient solutions can be obtained through the selective use of the two methods.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Improved Dynamic Impedance Method for Dynamic Analysis of a Vehicle


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Noise & Vibration Conference & Exposition ; 1993



    Publication date :

    1993-05-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    An improved dynamic impedance method for dynamic analysis of a vehicle

    Matsui,T. / Suzuki,K. / Mori,K. et al. | Automotive engineering | 1993


    An Improved Dynamic Impedance Method for Dynamic Analysis of a Vehicle

    Matsui, T. / Suzuki, K. / Mori, K. et al. | British Library Conference Proceedings | 1992


    Improved dynamic testing by impedance control

    Carl, J. / Sivaselvan, M. V. | British Library Online Contents | 2011


    Practical considerations of vehicle noise and vibration simulation using an improved dynamic impedance method

    Steyer,G.C. / Lim,T.C. / Structural Dynamics Research,US | Automotive engineering | 1993