Second-order harmonic field characteristics at solid-solid interface with P wave incidence  

作　　者：WU Ning HAN Qingbang HONG Xiaomin 

机构地区：[1]College of IOT Engineering,Hohai University,Changzhou 213022

出　　处：《Chinese Journal of Acoustics》2020年第4期541-551,共11页声学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (11574072,11274091);the Key Research Project of Jiangsu Province (BE2016056)。

摘　　要：The second-order harmonic field characteristics at the solid-solid interface with P wave incidence were evaluated according to the second-order potential theory.An isotropic solid-solid interface was established to solve the boundary value problem of second-order nonhomogeneous potential equation based on the Lagrange’s method of variation parameters.A numerical computation was performed to analyze the incident angle and second-order harmonic displacement.The results show that the longitudinal wave and transverse wave displacements of second-order harmonic field rapidly increase at a specific incidence angle.Moreover,the special solutions of displacement abruptly change for incident angle θw.Finally,the effect of boundary surface on second-order harmonic sound field is also discussed.

关 键 词：theory. HARMONIC WAVE 

分 类 号：O441.1[理学—电磁学]