声振耦合数值模型合理性分析和实验验证  

Rationalization and Experiments of Current Vibroacoustic Analytical Models

作　　者：胡选利[1] 陈花玲[1] 赵建平[1] 

机构地区：[1]西安交通大学

出　　处：《西安交通大学学报》1997年第7期1-6,共6页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金

摘　　要：对采用声弹性法、有限元法和边界元法建立的声振分析模型进行了讨论，指出在一定假设条件下三种模型的统一性，同时指出了各种模型的优缺点和适用范围．通过对一个矩形截面弹性壁腔体内部声场和壁面振动的实验测量，说明了各种模型求解时所用简化假设的合理性．Three numerical methods, i.e. acoustic elasticity, finite element and boundary element, for the modeling of vibroacoustic systems are discussed. The unity, advantages, disadvantages and application limitations of three methods are summarized. All numerical models use some assumptions and simplifications, of which the rationalization has never been verified. In this paper the rationalization of some assumptions used in numerical models, and the vibroacoustic coupling on frequencies and modes are tested by measuring the interior sound and structural vibration of a rectangular sectional cavity with all elastic walls under point force excitation.

关 键 词：声振耦合 声弹性 有限元 数值模型 机械振动 

分 类 号：TH113.1[机械工程—机械设计及理论]