326 凹凸形状付加による薄肉平板の音響放射パワーの低減化 : 音響パワーを目的関数とした最適解の実験検証と減衰比を考慮した最適化(騒音低減化設計,OS-20:サイレント工学)

概要

論文の詳細を見る
This paper describes the optimization method to reduce sound power radiating from a peripherally fixed thin rectangular plate by adding a rectangular hollow. The sound power at the fundamental frequency of the plate was set as an objective function. The location and size of the hollow were set as design variables and were optimized with the Feasible direction method.To improve the estimation error, the modal damping ratios after the structural modification were estimated based on the assumption of proportional viscous damping. The sound power radiating from optimized plate with the estimated modal damping ratio reduced by 5.3dB.
社団法人日本機械学会の論文
2004-09-27