标题：A Simple Statistical Energy Analysis Technique on Modeling Continuous Coupling Interfaces
作者：Ji, Lin; Huang, Zhenyu
作者机构：[Ji, Lin] Shandong Univ, Sch Mech Engn, Jinan 250061, Peoples R China.; [Huang, Zhenyu] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Sh 更多
通讯作者地址：[Ji, L]Shandong Univ, Sch Mech Engn, Jinan 250061, Peoples R China.
来源：JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
关键词：statistical energy analysis (SEA); coupling loss factor (CLF); power; injection method (PIM); continuous coupling; discrete coupling
摘要：In statistical energy analysis (SEA) modeling, it is desirable that the SEA coupling loss factors (CLFs) between two continuously connected subsystems can be estimated in a convenient way. A simple SEA modeling technique is recommended in that continuous coupling interfaces may be replaced by sets of discrete points, provided the points are spaced at an appropriate distance apart. Consequently, the simple CLF formulae derived from discretely-connected substructures can be applied for continuous coupling cases. Based on the numerical investigations on SEA modeling of two thin plates connected along a line, a point-spacing criterion is recommended by fitting the point-and line-connection data of the two plates. It shows that the point spacing depends on not only the wavelengths but also the wavelength ratio of the two coupled subsystems.