相似耦合系统的统计能量分析  

Statistical energy analysis of similar coupled systems

作　　者：张建[1] 

机构地区：[1]山东工程学院汽车研究所,淄博255012

出　　处：《声学学报》2002年第2期102-106,共5页Acta Acustica

基　　金：山东省自然科学基金资助项目

摘　　要：根据相关或互不相关激励条件下非保守耦合系统的统计能量分析原理，建立了两个相似的ＳＥＡ系统之间的能量关系，提出了由已知系统预估未知相似系统的ＳＥＡ方法。通过对保守和非保守耦合情况下板－梁和板－边框两个相似耦合系统的研究，分别从理论和实验上论证了这种方法的合理性。作为方法的应用，本文研究了两个相似切削系统的切削噪声问题，研究结果表明，理论分析和实验结果有很好的一致性，该方法可以有效地用于复杂耦合系统动态问题的研究。Based on the principle of statistical energy analysis for non-conservatively coupled dynamical systems under non-correlative or correlative excitations, energy relationship between two similar SEA systems is established in the paper. The energy relationship is verified theoretically and experimentally from two similar SEA systems i.e., the structure of a coupled panel-beam and that of a coupled panel-sideframe, in the cases of conservative coupling and non-conservative coupling respectively. As an application of the method, relationship between noise power radiated from two similar cutting systems is studied. Results show that there are good agreements between the theory and the experiments, and the method is valuable to the analysis of dynamical problems associated with a complicated system from that with a simple one.

关 键 词：相似耦合系统 统计能量分析 机械系统 相似切削系统 噪声处理 

分 类 号：TG501.1[金属学及工艺—金属切削加工及机床]