Ultra-thin Piezoelectric Lattice for Vibration Suppression in Pipe Conveying Fluid

查看全文 作　　者：Xiaofei [1,2]Lyu;Fei [3]Chen;Qingquan [4]Ren;Ye [1,2]Tang;Qian [1,2]Ding;Tianzhi [1,2]Yang

机构地区：[1]Department of Mechanics,Tianjin University,Tianjin 300350,China;[2]Tianjin Key Laboratory of Nonlinear Dynamics and Control,Tianjin 300350,China;[3]Department of Mechanical Engineering,The Hong Kong Polytechnic University,Hung Horn,Kowloon Hong Kong SAR,China;[4]School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China

出　　处：《Acta Mechanica Solida Sinica》索引2020年第33卷第6期,共11页

基　　金：the Natural Science Foundation of China[Grant Numbers 11972245,11672187,11902001];the China Postdoctoral Science Foundation funded project[Grant Number 2018M641643]. 摘　　要：In this paper,an electrically active,ultra-thin,easy-to-implement,and tunable phononic crystal(PC)-based device is proposed to suppress excessive vibration in pipes conveying fluids.We demonstrate that this device can be realized by periodic implementation of piezoelectric patches with shunt circuits on the pipe acting as PCs for vibration suppression.The mathematical model of the pipe structure is simplified to the form of the Euler Bernoulli beam,and the transfer matrix method and the finite element method are used to predict the effective bandgap.Conversion between mechanical vibration energy and electrical energy via the piezoelectric effect is observed.As a result,the pipe vibration is suppressed by combined Bragg and electroelastic bandgaps.The comparison with previous literature shows that this ultra-compact device provides a new solution for vibration and noise control in long-distance fluid-conveying pipe systems. 关键词：Fluid-conveying pipe Periodic structure Piezoelectric lattice Bandgap Transfer matrix method

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Ultra-thin Piezoelectric Lattice for Vibration Suppression in Pipe Conveying Fluid

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