Scattering of obliquely incident waves by straight features in a plate

被引：12

作者：

Feng, Feilong ^{[1
,2
]}

Shen, Zhuangzhi ^{[1
]}

Shen, Jianzhong ^{[3
]}

机构：

[1] Shaanxi Normal Univ, Inst Appl Acoust, Xian 710062, Peoples R China

[2] Xian Polytech Univ, Sch Sci, Xian 710048, Peoples R China

[3] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China

来源：

WAVE MOTION | 2016年 / 60卷

关键词：

Mode decomposition; Oblique incidence; Straight features; Real orthogonal relation; Hermitian matrix; GUIDED-WAVES; LAMB WAVES; EDGE; REFLECTION; SURFACE;

D O I：

10.1016/j.wavemoti.2015.09.005

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The scattering of obliquely incident waves by straight features in a plate is solved analytically. The reflection matrix of a free straight edge and the scattering matrix of a straight thickness step are obtained respectively by modal decomposition based on a real orthogonal relation. The formulas are illustrated through numerical examples. The matrices are found to be Hermitian for the propagating modes; thus, the mode conversions are reciprocal in terms of energy. The matrices can be used to determine the scattering from more complicated straight features if the cross sections are approximated as sequences of stairs and steps. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：84 / 94

页数：11

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