Vibroacoustic response of complex equipment loaded panels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Aerospace system structures are by necessity stiffness to weight optimized, which often results in efficient coupling to their intense external acoustic environments. For many aerospace, as well as other vehicle structures, a lightweight primary or master structure is loaded with equipment or substructures. The effects of these attachments on the master structure's structural- Acoustic coupling (radiation and response) are critical for assessing the system's acoustically induced responses. However, these attachment effects are often poorly understood and also are difficult to deterministically model and predict. In this work the radiation coupling and efficiency of a class of lightweight aerospace panel (aluminum sandwich honeycomb core panel) with and without complex (electronic equipment) attachments are investigated using Power Injection (PI) experimental techniques. The panel's radiation efficiencies are explored and trended for various mechanical boundary conditions, acoustical boundary conditions, and complex equipment loading configurations. The results for the unloaded panels correlate well with theory for the edges free vs. supported and acoustically baffled vs. un-baffled. A range of complex attachment configurations, for attachment to panel mass ratios up to seven- To-one, are also evaluated and general predictive design assessment procedures developed for use by designers and noise / vibration control engineers. Copyright

Original languageEnglish (US)
Title of host publication42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013
Subtitle of host publicationNoise Control for Quality of Life
PublisherOAL-Osterreichischer Arbeitsring fur Larmbekampfung
Pages4138-4149
Number of pages12
ISBN (Print)9781632662675
StatePublished - Jan 1 2013
Event42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013 - Innsbruck, Austria
Duration: Sep 15 2013Sep 18 2013

Publication series

Name42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life
Volume5

Other

Other42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013
CountryAustria
CityInnsbruck
Period9/15/139/18/13

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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  • Cite this

    Conlon, S. C. (2013). Vibroacoustic response of complex equipment loaded panels. In 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life (pp. 4138-4149). (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life; Vol. 5). OAL-Osterreichischer Arbeitsring fur Larmbekampfung.