Vibration Characteristics of a Box-Type Structure

T.R. Lin, Jie Pan

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    This paper is concerned with the understanding of vibration characteristics of a box-type structure using the finite element method as a tool. We found that mode shapes of the box structure can be classified according to their symmetrical properties, which are defined by the relative motion between the six plate panels constituting the box. The infinite number of modes of the box-type structure is divided into six groups. Each group has common features of symmetry and similar coupling mechanisms between component panels and distribution of out-of-plane and in-plane components of vibration. Local and net-volume displacements associated with each mode can be correlated with the characteristics of the box as sound sources. Large volume displacement modes resembling the simple sound sources (e.g., monopole and dipole) are identified among the low frequency modes. The distributions of in-plane and out-of-plane (including translational and rotational vibrations at the box edges) vibration components in the modes of the box are also investigated to illustrate the energy transmission mechanism between the box panel
    Original languageEnglish
    Pages (from-to)1-13
    JournalJournal of Vibration and Acoustics
    Volume131
    Issue number3
    DOIs
    Publication statusPublished - 2009

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    boxes
    Acoustic waves
    vibration
    Finite element method
    acoustics
    modal response
    monopoles
    finite element method
    dipoles
    low frequencies
    symmetry

    Cite this

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    abstract = "This paper is concerned with the understanding of vibration characteristics of a box-type structure using the finite element method as a tool. We found that mode shapes of the box structure can be classified according to their symmetrical properties, which are defined by the relative motion between the six plate panels constituting the box. The infinite number of modes of the box-type structure is divided into six groups. Each group has common features of symmetry and similar coupling mechanisms between component panels and distribution of out-of-plane and in-plane components of vibration. Local and net-volume displacements associated with each mode can be correlated with the characteristics of the box as sound sources. Large volume displacement modes resembling the simple sound sources (e.g., monopole and dipole) are identified among the low frequency modes. The distributions of in-plane and out-of-plane (including translational and rotational vibrations at the box edges) vibration components in the modes of the box are also investigated to illustrate the energy transmission mechanism between the box panel",
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    Vibration Characteristics of a Box-Type Structure. / Lin, T.R.; Pan, Jie.

    In: Journal of Vibration and Acoustics, Vol. 131, No. 3, 2009, p. 1-13.

    Research output: Contribution to journalArticle

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