振动表面局部辐射性质与声能量辐射: Ⅱ.应用  

Local characteristic and acoustical energy of radiation on vibrating surface:Ⅱ.Application

作　　者：姜哲[1] 赵晓丹[1] 

机构地区：[1]江苏理工大学,镇江212013

出　　处：《声学学报》1998年第1期74-81,共8页Acta Acustica

基　　金：国家自然科学基金

摘　　要：应用文献3提出的理论，针对钢板振动辐射声进行了实验研究，讨论了辐射机理以及辐射的声能量．点辐射阻抗系数之间存在的色散关系是一对一的，不仅适合光滑曲线，而且对离散的尖锐波峰也能适应．振动表面在向声场辐射声能量的同时，也从声场吸收声能量．Applying the theory put forward by reference 3, this paper studies the problem of radiation on a vibrating steel plate, and discusses the radiation mechanism and the radiating acoustical energy.Between the point radiation resistance efficiency and the point radiation reactance efficiency exists the chromatic dispersion relation which is one to one. The chromatic dispersion relation fits not only smooth curves, but also the dispersed sharp-pointed waves. While vibrating surface radiates acoustical energy into field, the vibrating surface absorbs some acoustical energy from the field.

关 键 词：阻抗系数 色散 声吸收 振动辐射声 声能量辐射 

分 类 号：O421[理学—声学] O422[理学—物理]