A design sensitivity analysis of high frequency structural-acoustic problem is formulated and presented. The Energy Finite Element Method (EFEM) is used to predict the structural-acoustic responses in high frequency range, where the coupling between the structural and acoustic domain are modeled by using radiation efficiency. The continuum design sensitivity formulation is derived from the governing equation of EFEM and the discrete method is applied in the variation of the structural-acoustic coupling matrix. The direct differentiation and adjoint variable method are both developed for the sensitivity analysis, where the difficulty of the adjoint variable method is overcome by solving a transposed system equation. Parametric design variables such as panel thickness and material damping are considered for sensitivity analysis, and the numerical sensitivity results show excellent agreement comparing with the finite difference results.
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ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 2–6, 2003
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-3700-9
PROCEEDINGS PAPER
Parametric Design Sensitivity Analysis of High Frequency Structural-Acoustic Problems Using Energy Finite Element Method
Kyung K. Choi,
Kyung K. Choi
University of Iowa, Iowa City, IA
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Nickolas Vlahopoulos,
Nickolas Vlahopoulos
University of Michigan, Ann Arbor, MI
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Aimin Wang,
Aimin Wang
University of Michigan, Ann Arbor, MI
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Weiguo Zhang
Weiguo Zhang
University of Michigan, Ann Arbor, MI
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Kyung K. Choi
University of Iowa, Iowa City, IA
Jun Dong
University of Iowa, Iowa City, IA
Nickolas Vlahopoulos
University of Michigan, Ann Arbor, MI
Aimin Wang
University of Michigan, Ann Arbor, MI
Weiguo Zhang
University of Michigan, Ann Arbor, MI
Paper No:
DETC2003/DAC-48753, pp. 481-493; 13 pages
Published Online:
June 23, 2008
Citation
Choi, KK, Dong, J, Vlahopoulos, N, Wang, A, & Zhang, W. "Parametric Design Sensitivity Analysis of High Frequency Structural-Acoustic Problems Using Energy Finite Element Method." Proceedings of the ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 2: 29th Design Automation Conference, Parts A and B. Chicago, Illinois, USA. September 2–6, 2003. pp. 481-493. ASME. https://doi.org/10.1115/DETC2003/DAC-48753
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