基于双层弹性圆柱薄板的广谱液压脉动衰减器的设计及特性分析  

Design and Characteristic Analysis of Broad-Spectrum Hydraulic Silencer with Double-Layer Flexible Cylindrical Thin Shell

作　　者：袁军 江杭 陆瑜 吴亮 方正艳 江凤先 YUAN Jun;JIANG Hang;LU Yu;WU Liang;FANG Zheng-yan;JIANG Feng-xian(Institute of Physics and Information Engineering,Zhaotong University,Zhaotong 657000,China;School of Education and Science,Zhaotong University,Zhaotong 657000,China;Business School,Yuxi Normal University,Yuxi 653100,China)

机构地区：[1]昭通学院物理与信息工程学院,云南昭通657000 [2]昭通学院教育科学学院,云南昭通657000 [3]玉溪师范学院商学院,云南玉溪653100

出　　处：《液压气动与密封》2021年第11期54-64,共11页Hydraulics Pneumatics & Seals

摘　　要：为了满足液压系统中降噪宽频带的要求,设计了一种基于双层弹性圆柱薄板的广谱液压脉动衰减器。通过合理配置广谱液压脉动衰减器的结构参数,实现对多个频率段的压力脉动进行衰减。双层弹性圆柱薄板广谱液压脉动衰减器由一个扩张室、两个不同参数的弹性圆柱薄板、四个质量室和一个容积室构成。构建了圆柱薄板流固耦合数学模型,推导出圆柱薄板的振动位移公式及广谱液压脉动衰减器的插入损失表达式。用MATLAB软件和ANSYS软件对双层圆柱薄板广谱液压脉动衰减器的静态特性、动态特性和压力脉动衰减性能进行仿真。仿真结果表明,基于双层弹性圆柱薄板的广谱液压脉动衰减器在50~1000 Hz的频率范围内有良好的衰减效果,衰减效果均大于25 dB,满足衰减频率宽频带、衰减效果较好的设计要求。In order to meet the requirement of wideband noise reduction in the hydraulic system,a broad-spectrum hydraulic silencer with a double-layer flexible cylindrical thin shell is designed.Through reasonably configuring the structural parameters of the broad-spectrum hydraulic silencer,the pressure pulsation of multiple frequency bands can be attenuated.The double-layer flexible cylindrical thin shell broad-spectrum hydraulic silencer consists of an expansion chamber,two flexible cylindrical thin shells with different parameters,four mass chambers and a volume chamber.The fluid-solid coupling mathematical model of the cylindrical thin shell is constructed.The vibration displacement formula of the cylindrical thin shell and the insertion loss expression of the broad-spectrum hydraulic silencer are derived.MATLAB software and ANSYS software are used to simulate the static characteristics,dynamic characteristics and pressure fluctuation attenuation performance of the double-layer cylindrical thin-shell broad-spectrum hydraulic silencer.The simulation results show that the broad-spectrum hydraulic silencer with the double-layer flexible cylindrical thin shell has a good attenuation effect in the frequency range of 50 Hz to 1000 Hz,and the attenuation effect is greater than 25 dB,which meets the design requirements of wide frequency band attenuation and better attenuation effect.

关 键 词：双层弹性圆柱薄板 广谱液压脉动衰减器 压力脉动 流固耦合 ANSYS分析 插入损失 

分 类 号：TH137[机械工程—机械制造及自动化]