105 相反性を利用した自動車騒音のパネル寄与分析法の検討(連成系・振動騒音,OS-9 モード解析とその応用関連技術,総合テーマ「伝統を,未来へ!」)

Abstract

This paper describes a reciprocal panel acoustic contribution analysis for vehicle interior noise in the low frequency range. Reciprocal panel contributions are calculated from uncoupled structural transfer functions of body panels and coupled acoustic transfer functions between receiver point and body panels. Analysis results of a simple model are presented for comparison with ordinary panel contributions computed form coupled structural transfer functions and uncoupled acoustic transfer functions. Finally, applications of reciprocal panel contributions are shown to be useful tools in modifying structure design for interior noise improvement.