Bending vibration of periodic acoustic black hole plate based on plane wave expansion method

被引：0

作者：

Wan, Zhiwei ^{[1
,2
]}

Yu, Ziheng ^{[1
,2
]}

Zhu, Xiang ^{[1
,2
,3
]}

Li, Tianyun ^{[1
,2
,3
]}

机构：

[1] School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan

[2] Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics, Wuhan

[3] Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2025年 / 46卷 / 06期

关键词：

acoustic black hole plate; band gap; bending vibration; finite element method; Kirchhoff-Love plate theory; periodic structure; plane wave expansion method; wavenumber;

D O I：

10.11990/jheu.202306051

中图分类号：

学科分类号：

摘要：

The periodic acoustic black hole plate exhibits impedance periodic variation. The vibration characteristics are resolved using the plane wave expansion method. A phononic crystal plate comprising the same material with no internal impedance discontinuity is constructed. Based on the Kirchhoff-Love thin plate theory, the bending vibration characteristics of periodic acoustic black hole plates are investigated using the plane wave expansion method. This method is validated using the finite element method, and the convergence is explored by changing the number of plane waves. The flexural vibration characteristics of a strip acoustic black hole plate, which easily produces a complete directional band gap, are analyzed by varying the embedded form of the acoustic black hole. Increasing the radius of the acoustic black hole and reducing the extra truncated thickness due to actual manufacturing accuracy cause the band gap to shift to a lower frequency, which increases the band gap width. © 2025 Editorial Board of Journal of Harbin Engineering. All rights reserved.

引用

页码：1105 / 1110

页数：5

共 31 条

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