Frequency response function (FRF) based substructure analysis can predict the response of complex systems using the FRFs of substructures. It combines the FRFs of each substructure derived from finite element analysis or experiments depending on the situation. In general, the substructure with the excitation is separated from the others by rubber bushes to prevent the transmission of vibration from the source to the main structure. In this case, the substructure with the excitation shows rigid body motion up to the mid-frequency region. This paper presents a new FRF-based substructure analysis that uses the FRFs from the rigid body information not from the complex finite element model of the substructure with rigid body motion. The rigid body information including the mass, the moment of inertia and the coordinates of the mass centre comes from the computer-aided design data. Since the mechanism of this technique is very similar to the finite element formation, it can be applied to complex systems with ease. Through a simple example of a ladder structure and a practical example of the interior noise in a car, the accuracy and efficiency of this approach is proven.


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    Title :

    Substructure analysis of complex systems using rigid body information of components


    Contributors:
    Hwang, W.S. (author) / Lee, D.H. (author)


    Publication date :

    2002


    Size :

    7 Seiten, 9 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Substructure analysis of complex systems using rigid body information of components

    Hwang,W.S. / Lee,D.H. / Daegu Univ.,KR et al. | Automotive engineering | 2002




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