Band-gap properties of fluid-conveying deployable meta-pipes with periodic inertial amplification mechanisms

IF 2.5 3区物理与天体物理 Q2 ACOUSTICS

Wave Motion Pub Date : 2025-07-29 DOI:10.1016/j.wavemoti.2025.103612

Muhammad Shoaib , Zhijing Wu , Jiping Jing , Fengming Li , Long Liu

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Abstract

In this paper, the transverse and longitudinal wave motions of a fluid-conveying deployable meta-pipe incorporating periodic inertial amplification (IA) mechanisms are systematically investigated. The proposed structure aims to enhance vibration attenuation based on the band gap (BG) property in low-frequency ranges. The dynamic model of the IA mechanism is established to precisely characterize the inertial forces generated by the coupled axial-bending deformation in the base pipe structure. Based on the Bloch theorem, the dispersion curves are analyzed using the transfer matrix method (TMM). An experiment prototype is manufactured and subjected to vibration testing for validation of the theoretical model. Parametric analysis reveals that both the position and bandwidth of transverse and longitudinal BGs exhibit significant dependence on variations in: (1) fluid velocity, (2) deploying velocity, (3) IA mechanism’s parameters (mass and angle) and (4) the length of the unit cell. This research can establish both theoretical and experimental foundations for engineering design focused on enhanced vibration attenuation in conveying-fluid pipes.

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具有周期性惯性放大机构的流体输送可展开元管的带隙特性

本文系统地研究了一种含周期惯性放大（IA）机构的流体输送可展开元管的横波和纵波运动。该结构旨在增强低频范围内基于带隙（BG）特性的振动衰减。为了准确表征基管结构轴向弯曲耦合变形所产生的惯性力，建立了内力机构的动力学模型。基于布洛赫定理，利用传递矩阵法对色散曲线进行了分析。制作了实验样机并进行了振动试验以验证理论模型的正确性。参数分析表明，横向和纵向BGs的位置和带宽都与以下因素有显著关系：(1)流体速度，(2)部署速度，(3)IA机构参数（质量和角度）和(4)单元格长度。该研究可为输送流体管道增强减振的工程设计奠定理论和实验基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wave Motion 物理-力学

CiteScore

4.10

自引率

8.30%

发文量

118

审稿时长

3 months

期刊介绍： Wave Motion is devoted to the cross fertilization of ideas, and to stimulating interaction between workers in various research areas in which wave propagation phenomena play a dominant role. The description and analysis of wave propagation phenomena provides a unifying thread connecting diverse areas of engineering and the physical sciences such as acoustics, optics, geophysics, seismology, electromagnetic theory, solid and fluid mechanics. The journal publishes papers on analytical, numerical and experimental methods. Papers that address fundamentally new topics in wave phenomena or develop wave propagation methods for solving direct and inverse problems are of interest to the journal.