K-0209 振動板のシェル形状最適設計による騒音低減化の検討(J02-3 最適化法の応用)(J02 設計・解析と最適化・適応化)

概要

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In many mechanical structures, structural design for noise reduction is becoming increasingly important. Noise reduction is often achieved through structural modifications. However, it is hard to predict the effectiveness of noise reduction by typical approaches. This paper presents an optimal design approach for reducing sound power from a vibrating plate by its curvature design. The method couples an optimization technique based on a genetic algorithm (GA) with the shape representation technique, vibration analysis and acoustic radiation analysis. It is shown that the curvature design of the plate obtained by using this method can achieve effective reductions in radiated sound power. Finally, the robustness of the optimized design candidates obtained is studied by using stochastic simulations in order to find the candidate which is least sensitive to changing design parameters.
一般社団法人日本機械学会の論文
2001-08-22