振動音響連成系の音圧最小化問題に対する最適性の考察とそれに基づく構造最適化 : 第2報,固有振動数における音圧の低減を図る場合(機械力学,計測,自動制御)

概要

論文の詳細を見る
The sound pressure in the frequency domain is expressed by a scalar product ot a structural frequency response function(FRF) and an acoustic FRF. Therefore, the optimality condition for sound pressure minimization is that, the amplitude of the sound pressure is zero when structural FRF and acoustic FRF are orthogonal. In this paper, sound pressure minimization at natural frequency is considered, based on the optimality condition. The acoustic FRF is not variable for structural modification in low frequency range. Therefore one can recognize at which frequency the structural vibration is easily transmitted to the sound pressure. And a novel efficient optimization approach based on the above knowledge is proposed.
社団法人日本機械学会の論文
2007-07-25