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TECHNICAL PAPERS

Design Optimization for Structural-Acoustic Problems Using FEA-BEA With Adjoint Variable Method

[+] Author and Article Information
Jun Dong, Kyung K. Choi

Fellow ASMEe-mail: kkchoi@ccad.uiowa.eduDepartment of Mechanical and Industrial Engineering and Center for Computer-Aided Design, The University of Iowa, Iowa City, IA 52242

Nam H. Kim

Department of Mechanical and Aerospace Engineering, The University of Florida, PO Box 116300, Gainesville, FL 32611-6300

J. Mech. Des 126(3), 527-533 (Oct 01, 2003) (7 pages) doi:10.1115/1.1701879 History: Received October 01, 2002; Revised October 01, 2003
Copyright © 2004 by ASME
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References

Figures

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Computational procedure of FEA-BEA optimization
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Vehicle structure FE model and acoustic BE model of the cabin part
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Sound pressure level (SPL) frequency response at driver’s ear position (at initial design)
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Sound pressure plot at 93.6 Hz: 77.78 dB at driver’s ear position (at initial design)
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Element design sensitivity plot w.r.t. panel thickness
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Design variable history
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Acoustic pressure distribution inside cabin (initial design at 93.6 Hz and optimum design at 93.7 Hz)
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Design constraints history in the frequency range between 93.3 and 94.3 Hz
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Sound pressure level frequency response at driver’s ear position (initial design and optimum design)

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