SEA PARAMETER ESTIMATION BASED ON A MODAL APPROACH

摘要：

This paper concerns the higher frequency vibrations of complex built-up structures, in particular, the problems involved in predicting the Statistical Energy Analysis (SEA) coupling loss factors by the conventional SEA theory. A modal approach is used to quantify the coupling strength between two coupled subsystems through an arbitrary interface. In the weak coupling region, the analytical expressions for describing the inter-modal coupling relations between the two sets of subsystem modes can be greatly simplified. Combining with the conventional SEA procedure, the SEA coupling loss factors and other SEA parameters can then be predicted in a simpler but more systematic way. A rod-rod coupling example is presented to illustrate the validity of the approach.

关键词： statistical energy analysis coupling loss factor coupling strength intermodal couplings

作者: Ji Lin

作者单位: Key Laboratory of High Efficiency and Clean Mechanical Manufacture, School of Mechanical Engieering, Shandong University, No.73, Jingshi Road, Jinan, 250061, PRC

会议类型: 国际会议

会议名称: The Fifth International Conference on VETOMAC-V(第五届振动工程及机械技术国际会议)

会议地点: 武汉

会议语种:英文

页码: 292-296

在线出版日期: 2009-08-27（万方平台首次上网日期，不代表论文的发表时间）