声振系统中高频能量流分析法研究进展  

Review of mid-to-high frequency energy flow analysis method for vibro-acoustic systems

作　　者：游进[1] 孟光[2] 李鸿光[2] 

机构地区：[1]中国空间技术研究院载人航天总体部,北京100094 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《振动与冲击》2012年第11期62-69,共8页Journal of Vibration and Shock

摘　　要：能量流分析法是预测声振系统中高频动力响应的一种有效手段,该方法引入的假设条件较少,并可基于声振系统的几何模型计算随空间变化的稳态动力响应,在应用上具有很大的优点。首先回顾了不同结构件(包括杆、梁、板及复合结构)各种波场的能量微分方程及其理论基础的发展过程,然后,针对不同类型的声振系统耦合形式,包括结构/结构耦合,结构/流体耦合及其它耦合情况,说明了基于能量流分析的耦合问题处理方法的发展,最后,说明了计算随机激励下声振系统响应的随机能量流分析法的相关研究,以及其与经典统计能量分析法间理论关系研究的进展情况。Energy flow analysis （EFA） method is an effective simulation tool predicting dynamic behavior of vibroacoustic systems. This approach involves only a few assumptions, and can provide information conceruing spatial evolution of dynamic response of subsystems, it has significant advantages for practical application. Here, the development process of differential energy equations of several wave types for different structural/acoustic components and their theoretical basis were reviewed firstly. Then, the achievements made to develop the capability of EFA in dealing with several kinds of complex coupling problems including structure/structure coupling, structure/fluid coupling, and some other specific coupling situations were elaborated. At last, the random energy flow analysis （REFA） suitable for the situation under random excitations was introduced, and the studying on the differences and theoretical relationship between REFA and the classical statistical energy analysis （SEA） was reviewed.

关 键 词：能量流分析 能量密度 声振系统 随机能量流分析 统计能量分析 

分 类 号：TB52[理学—物理]