摘要
管路系统广泛应用于船舶动力设备、空调通风管道等系统中,是振动传递的一个重要途径,控制管路的振动可有效抑制其对振动噪声的传递。声子晶体周期管路结构设计技术能有效减低管路系统的低频振动噪声。以一种局域共振型周期管路为研究对象,建立周期管路系统的仿真模型,分析局域振子宽度、外径和材料密度等参数对周期管路减振效果的影响规律,并通过试验进行验证。结果表明:局域振子的宽度和材料密度对管路系统减振效果影响明显,最高可降低7.8 dB;局域振子的外径对管路系统的振级落差影响较小。基于局域共振设计周期管路系统可为管路系统的减振设计提供新的思路。
Pipeline system is widely used in ship power equipment,air conditioning and ventilation ducts and some other systems,and meanwhile is an important path of vibration transmission.Controlling the vibration of pipeline can effectively suppress the vibration noise transmission of the pipeline system.Using phononic crystal cycle pipe structure can effectively reduce the low frequency vibration noise of the pipeline system.In this paper,taking a local resonance type periodic pipeline as the research object,its simulation model is established.The influence law of parameters such as width,outer diameter and material density of the local oscillator on the vibration damping effect of the periodic pipeline system is analyzed and verified through the test.The results show that the width and material density of the local oscillator have obvious influence on the damping effect of the pipeline system,which can be up to 7.8 dB;the outer diameter of the local oscillator has less influence on the vibration level drop of the pipeline system.The design of periodic piping system based on local resonance provides a new idea for the vibration reduction of pipeline systems.
作者
夏兆旺
鞠福瑜
卢志伟
史德祥
XIA Zhaowang;JU Fuyu;LU Zhiwei;SHI Dexiang(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China;Wuhan Second Ship Design and Research Institute,Wuhan 430064,China;School of Ship and Ocean Engineering,Jiangsu Maritime Institute,Nanjing 211170,China)
出处
《噪声与振动控制》
CSCD
北大核心
2023年第2期86-91,共6页
Noise and Vibration Control
基金
江苏省自然科学基金资助项目(BK20191462)
热能动力技术重点实验室开放基金资助项目(TPL2020003)。
关键词
振动与波
周期结构
管路系统
局域共振
周期管路
减振性能
vibration and wave
periodic structure
pipeline system
local resonance
periodic pipeline
vibration reduction performance
