Study on the band gaps of phononic crystal pipes with alternating materials in the radial and axial directions

被引：30

作者：

Zhang, Yafeng ^{[1
]}

Yu, Dianlong ^{[2
]}

Wen, Jihong ^{[2
]}

机构：

[1] Bengbu Automobile NCO Acad, Dept Equipment Support, Bengbu 233011, Peoples R China

[2] Natl Univ Def Technol, Lab Sci Integrated Logist Support Lab, Changsha 410073, Hunan, Peoples R China

来源：

EXTREME MECHANICS LETTERS | 2017年 / 12卷

基金：

中国国家自然科学基金;

关键词：

Phononic crystal (PC) pipe; Band gap (BG); Band structure; Pipe cell; VIBRATION REDUCTION; WAVE-PROPAGATION; FINITE-ELEMENT;

D O I：

10.1016/j.eml.2016.10.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Low-frequency vibration control is a key technology in the vibration control of pipe systems. The existing related research on band gap mechanisms suggests that gigantic structures are required for the Bragg-type band gaps to control low-frequency vibration. Thus, the application of Bragg-type phononic crystal pipe is greatly restricted. However, the suggestion given by the existing Bragg-type band gap mechanisms is based on simple cell structure and material composition. The cell structures of Bragg-type phononic crystal pipes are also simple and the potential action of the cell has not been fully excavated at present. In this paper, several new cells with relatively complex structure are designed to study the influence on the Bragg-type band gap characteristics. Band structures of the Bragg-type phononic crystal pipes with new cells are calculated via a combination of periodic structure theory and finite element method. Compared to the classical phononic crystal pipe, when a same lattice constant is adopted, the phononic crystal pipes with new cells obtain lower frequency band gaps or widen the low-frequency band gaps. (C 2016 Elsevier Ltd. All rights reserved.

引用

页码：2 / 6

页数：5

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