The Impact of Moments Near Discontinuities in Structural-Acoustic Systems-Reference-Cited by-同舟云学术

The Impact of Moments Near Discontinuities in Structural-Acoustic Systems

Published:2003-04-01 Issue:2 Volume:125 Page:137-144
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Shepard, W. Steve¹

Affiliation:

1. Department of Mechanical Engineering, The University of Alabama, Box 870276, Tuscaloosa, AL 35487

Abstract

The impact of a moment excitation on the vibrational and acoustical response of a fluid-loaded system containing a structural discontinuity is examined. The response metric of interest is the acoustic power radiated from a semi-infinite plate supported in a rigid baffle. The impact of a moment excitation located near a locally reacting distributed-mass discontinuity as well as near the simple supports is examined. Numerical results show that the addition of a moment component can have a dramatic impact on the radiated acoustic power. Both the magnitude and phase of the moment relative to the force can impact the radiated acoustic power.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/125/2/137/5826918/137_1.pdf

Reference13 articles.

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3. Petersson, B. A. T. , 1993, “Structural Acoustic Power Transmission by Point Moment and Force Excitation, Part II: Plate-Like Structures,” J. Sound Vib., 160, pp. 67–91.

4. Goyder, H. G. D., and White, R. G., 1980, “Vibrational Power Flow from Machines into Built-up Structures, Part III: Power Flow through Isolation Systems,” J. Sound Vib., 68, pp. 97–117.

5. Petersson, B. A. T. , 1994, “Efficiency of Annularly Distributed Moment and Force Excitation Regarding Structural Acoustic Power Transmission to Plate-Like Structures,” J. Sound Vib., 176, pp. 625–639.