Acoustic design sensitivity analysis and optimization for reduced exterior noise
Acoustic design sensitivity analysis and optimization for reduced exterior noise
A program, global acoustic design sensitivity analyzer, is developed that can perform a global acoustic design sensitivity analysis of exterior noise with respect to structural sizing design variables. A system for global acoustic design sensitivity is introduced and implemented numerically by employing the continuum sensitivity analysis. A half-scale automobile cavity model is considered as a numerical example. By using a continuum method, the authors obtained accurate and efficient sensitivities when the number of design variables was large. Also, the tendency plots of element sensitivities and energy contribution for global acoustic sensitivities are available. Finally, a design optimization was performed to simultaneously reduce the weight and sound pressure level at interesting points and frequencies.
Document information
Acoustic design sensitivity analysis and optimization for reduced exterior noise
Simulationsprogramm zur Ermittlung der örtlichen Verteilung der globalen Sensitivität der Schallabstrahlung einer Fahrzeugkarosserie
AIAA Journal ; 39 , 4 ; 574-580
2001
7 Seiten, 15 Bilder, 4 Tabellen, 6 Quellen
Article (Journal)
English
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