Structural-acoustic optimization of a pressurized, ribbed panel

Research output: Contribution to journalConference article

Abstract

A method to reduce the noise radiated by a ribbed panel excited by turbulent boundary layer flow is presented. To compute the structural-acoustic response, a modal approach based on finite element/boundary element analysis was coupled to a turbulent boundary flow forcing function. A static pressure load was also applied to the panel to simulate cabin pressurization during flight. The radiated sound power was then minimized by optimizing the horizontal and vertical rib location and rib cross section using an evolutionary search algorithm. Nearly 10 dB of reduction was achieved by pushing the ribs to the edge of the panel.

Original languageEnglish (US)
Article number065003
JournalProceedings of Meetings on Acoustics
Volume22
Issue number1
DOIs
StatePublished - Jan 1 2015
Event168th Meeting of the Acoustical Society of America - Indianapolis, United States
Duration: Oct 27 2014Oct 31 2014

Fingerprint

optimization
acoustics
cabins
boundary layer flow
pushing
static pressure
turbulent boundary layer
flight
cross sections

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

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abstract = "A method to reduce the noise radiated by a ribbed panel excited by turbulent boundary layer flow is presented. To compute the structural-acoustic response, a modal approach based on finite element/boundary element analysis was coupled to a turbulent boundary flow forcing function. A static pressure load was also applied to the panel to simulate cabin pressurization during flight. The radiated sound power was then minimized by optimizing the horizontal and vertical rib location and rib cross section using an evolutionary search algorithm. Nearly 10 dB of reduction was achieved by pushing the ribs to the edge of the panel.",
author = "Shepherd, {Micah R.} and Hambric, {Stephen A.}",
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Structural-acoustic optimization of a pressurized, ribbed panel. / Shepherd, Micah R.; Hambric, Stephen A.

In: Proceedings of Meetings on Acoustics, Vol. 22, No. 1, 065003, 01.01.2015.

Research output: Contribution to journalConference article

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