A general optimization strategy for sound power minimization

A. D. Belegundu, R. R. Salagame, G. H. Koopmann

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


A general approach for minimizing radiated acoustic power of a baffled plate excited by broad band harmonic excitation is given. The steps involve a finite element discretization for expressing acoustic power and vibration analysis, analytical design sensitivity analysis, and the use of gradient-based optimization algorithms. Acoustic power expressions are derived from the Rayleigh integral for plates. A general methodology is developed for computing design sensitivities using analytical expressions. Results show that analytical sensitivity analysis is important from both computational time and accuracy considerations. Applications of the optimization strategy to rectangular plates and an engine cover plate are presented. Thicknesses are chosen as design variables.

Original languageEnglish (US)
Pages (from-to)113-119
Number of pages7
JournalStructural Optimization
Issue number2-3
StatePublished - Oct 1994

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering


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