利用迭加法计算阶梯圆板辐射阻抗  

Calculation of the radiation impedance of stepped circular plate with superposition method

作　　者：贺西平[1] 宋旭霞[1] 张频[2] 樊安仓[1] 

机构地区：[1]陕西师范大学应用声学研究所,西安710062 [2]西安建筑科技大学理学院,西安710055

出　　处：《声学技术》2009年第2期188-190,共3页Technical Acoustics

基　　金：国家自然科学基金(10874102);陕西省自然科学基金项目(2007A07)

摘　　要：辐射阻抗是描述声学振动系统的一个重要物理量。对阶梯圆板的辐射阻抗而言,运用传统理论计算时,由于辐射面不在同一几何面,积分上下限很难选取而无法计算。从辐射声功率角度,基于叠加原理,提出了计算阶梯板辐射阻抗的算法——迭加法,并计算了带有一个阶梯的阶梯板辐射阻抗。Radiation impedance is a key physical quantity, used to describe vibration system. As far as the radiation impedance of stepped circular plate is concerned, the classical theory has difficulty in calculation, due to the fact that the radiation surface is not coplanar, and so the domain of integration is difficult to choose. From the point of view of radiation acoustic power, and based on superposition theory, a superposed method is proposed to calculate the radiation impedance and as an example the radiation impedance of circular plate with one step is obtained.

关 键 词：阶梯圆板 辐射阻抗 叠加原理 

分 类 号：O422.2[理学—声学]