复慢度域格林函数的深入分析  

Deep Analysis of Green's Function in Complex Slowness Domain

作　　者：周东祥[1,2] 王易[1,2] 傅邱云[1,2] 罗为[1,2] 

机构地区：[1]华中科技大学电子科学与技术系 [2]华中科技大学塑性成形模拟及模具技术国家重点实验室,武汉430074

出　　处：《武汉理工大学学报》2012年第1期127-132,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金面上项目(60772014)

摘　　要：深入研究了声表面波广义格林函数在复慢度平面上的解析性质。针对复杂的漏表面波特性,提出了在数学上自洽的漏波选根原理。最后将实空间域格林函数分解为静电,表面波场和体波积分贡献之和,展示了体波格林函数在复慢度平面上的特性。This paper investigated the analytical property of general Green＇s function in complex slowness plane in a deepgoing way.The mathematically self-consistent selection rule of roots of leaky wave was presented in accordance with the complex property of leaky surface wave.Finally the real space domain Green＇s function was divided into electrostatic term,SAW/LSAW terms and bulk wave integral terms.The property of bulk wave Green＇s function in complex slowness plane was studied as well.

关 键 词：声表面波(SAW) 边界元法(BEM) 格林函数 漏波 分支奇异性 

分 类 号：TN65[电子电信—电路与系统]