局域共振周期管路流致振动抑制技术研究  

Research on the Flow-induced Vibration Suppression of Locally Resonant Periodic Pipeline

作　　者：张浩 陈圣兵[1] 张伟[1] 陈万华[1] 宋玉宝[1] Zhang Hao;Chen Shengbing;Zhang Wei;Chen Wanhua;Song Yubao(China Aerodynamics Research and Development Center,Mianyang,Sichuan 621000,China)

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《化工设备与管道》2023年第1期67-72,共6页Process Equipment & Piping

基　　金：国家自然科学基金项目(51805530,51905532);中国空气动力研究与发展中心风雷基金(FLYIF201805)。

摘　　要：针对通气管路的流致振动抑制难题,构造了具有低频宽带振动带隙特性的局域共振周期管路系统。分别采用半解析方法和有限元法,对局域共振周期管路的能带结构和振动传输损失进行了计算,揭示了带隙的形成机理,分析了关键结构参数等对带隙特性的影响规律。搭建了局域共振周期管路系统减隔振性能测试实验平台,测量了振动频率响应曲线。研究表明,在带隙频率范围内,局域共振周期管路的振动传播能够被有效抑制。研究为通气管路的振动抑制提供了一种新思路。In order to solve the problem of flow-induced vibration suppression in the ventilation pipeline,a local resonance periodic pipeline system with low frequency and broadband vibration band gap was constructed.Semi-analytical method and finite element method were used to calculate the energy band structure and vibration transmission loss of the local resonance periodic pipeline,reveal the formation mechanism of the band gap,and analyze the influence of key structural parameters on the band gap characteristics.The vibration reduction and isolation performance test platform of the local resonance periodic pipeline system was built,and the vibration frequency response curve was measured.The research showed that the vibration propagation of the local resonance periodic pipeline could be effectively suppressed in the band gap frequency range.a new idea for the vibration suppression of the ventilation pipeline was provided in this study.

关 键 词：局域共振 周期管路 振动抑制 带隙 

分 类 号：TH311[机械工程—机械制造及自动化]