Definition of a high-frequency threshold for plates and acoustical spaces

G. Rabbiolo; R. J. Bernhard; F. A. Milner

doi:10.1016/j.jsv.2003.09.015

Definition of a high-frequency threshold for plates and acoustical spaces

G. Rabbiolo, R. J. Bernhard, F. A. Milner

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

An extension of the modal overlap factor is introduced that includes ensemble variations and frequency averaging of plates and acoustic spaces. Uniformly and normally distributed variations of geometric and material parameters are considered. Using this modal overlap factor, approximate formulas are derived to identify the limit of predictability for the combined case of damping, ensemble variation, and frequency averaging. The extended modal overlap factor is used to define a high-frequency threshold for plates and acoustical spaces that depends on system parameters and their variations as well as on damping, and the bandwidth of frequency averaging. Monte-Carlo simulations are shown to illustrate and validate the results.

Original language	English (US)
Pages (from-to)	647-667
Number of pages	21
Journal	Journal of Sound and Vibration
Volume	277
Issue number	4-5
DOIs	https://doi.org/10.1016/j.jsv.2003.09.015
State	Published - Nov 5 2004
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Acoustics and Ultrasonics
Mechanical Engineering

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10.1016/j.jsv.2003.09.015

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abstract = "An extension of the modal overlap factor is introduced that includes ensemble variations and frequency averaging of plates and acoustic spaces. Uniformly and normally distributed variations of geometric and material parameters are considered. Using this modal overlap factor, approximate formulas are derived to identify the limit of predictability for the combined case of damping, ensemble variation, and frequency averaging. The extended modal overlap factor is used to define a high-frequency threshold for plates and acoustical spaces that depends on system parameters and their variations as well as on damping, and the bandwidth of frequency averaging. Monte-Carlo simulations are shown to illustrate and validate the results.",

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AU - Bernhard, R. J.

AU - Milner, F. A.

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N2 - An extension of the modal overlap factor is introduced that includes ensemble variations and frequency averaging of plates and acoustic spaces. Uniformly and normally distributed variations of geometric and material parameters are considered. Using this modal overlap factor, approximate formulas are derived to identify the limit of predictability for the combined case of damping, ensemble variation, and frequency averaging. The extended modal overlap factor is used to define a high-frequency threshold for plates and acoustical spaces that depends on system parameters and their variations as well as on damping, and the bandwidth of frequency averaging. Monte-Carlo simulations are shown to illustrate and validate the results.

AB - An extension of the modal overlap factor is introduced that includes ensemble variations and frequency averaging of plates and acoustic spaces. Uniformly and normally distributed variations of geometric and material parameters are considered. Using this modal overlap factor, approximate formulas are derived to identify the limit of predictability for the combined case of damping, ensemble variation, and frequency averaging. The extended modal overlap factor is used to define a high-frequency threshold for plates and acoustical spaces that depends on system parameters and their variations as well as on damping, and the bandwidth of frequency averaging. Monte-Carlo simulations are shown to illustrate and validate the results.

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JO - Journal of Sound and Vibration

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ER -

Definition of a high-frequency threshold for plates and acoustical spaces

Abstract

ASJC Scopus subject areas

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