Design and optimization of broadband vibration absorbers for noise control

Emily S. Heinze, Michael D. Grissom, Ashok D. Belegundu

    Research output: Contribution to journalArticle

    Abstract

    A general and practical approach is presented for optimizing structural additions to a base structure for broadband dynamic objectives when the base structure is excited by an arbitrary forcing function. The mode shapes and natural frequencies of the base structure are first found using a commercial finite element code or an experimental modal analysis. The mode shapes are used as basis shapes to reduce the size of the equations. The structural additions are then added as impedances into the reduced modal model. An efficient analysis algorithm is presented to reduce the computational burden for broadband analysis and optimization loops. The power transferred into a Broadband Vibration Absorber (BBVA) from a base structure is maximized as an example application. The numerical results are experimentally verified demonstrating the practical design capabilities of the method.

    Original languageEnglish (US)
    Pages (from-to)255-260
    Number of pages6
    JournalAmerican Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
    Volume28
    Issue number28
    StatePublished - 2001

    Fingerprint

    Acoustic variables control
    Modal analysis
    Natural frequencies
    absorbers
    modal response
    broadband
    vibration
    optimization
    resonant frequencies
    impedance

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering
    • Acoustics and Ultrasonics

    Cite this

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    Design and optimization of broadband vibration absorbers for noise control. / Heinze, Emily S.; Grissom, Michael D.; Belegundu, Ashok D.

    In: American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA, Vol. 28, No. 28, 2001, p. 255-260.

    Research output: Contribution to journalArticle

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