轴向振动对液压胶管出口压力波动影响  

Influence of axial vibration on pressure fluctuation at outlet of hydraulic hose

作　　者：杨忠炯[1,2] 李俊[1] 周立强[1] 蔡岳林 Yang Zhongjiong;Li Jun;Zhou Liqiang;Cai Yuelin(College of Mechanical and Electrical Engineering;State Key Laboratory of High Performance and Complex Manufacturing,Central South University,Changsha 410083,China)

机构地区：[1]中南大学机电工程学院,湖南长沙410083 [2]中南大学中南大学高性能复杂制造国家重点实验室,湖南长沙410083

出　　处：《华中科技大学学报（自然科学版）》2018年第11期53-58,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2013CB035404)

摘　　要：为了提升和改进硬岩掘进机工作时液压胶管内流体能量的传递特性,基于复合材料层合板理论和流固耦合理论,建立了缠绕式胶管轴向振动流固耦合模型.仿真和实验研究了振动参数、结构参数和流体参数对胶管出口压力波动影响.研究结果表明：当基础振动频率在40Hz附近时,出口压力波动幅值最大,此时激振频率接近胶管固有频率,出口压力波动幅值在一定范围随振动幅值呈线性增长;胶管长度对出口压力波动影响强于胶管内径;随着流体流速增加,胶管出口压力波动幅值逐渐减小,流体黏度对压力波动影响较小.In order to enhance and improve the transfer characteristics of fluid energy in the hydraulic hose the tunnel boring machine（TBM） operation,the mathematical models for axial vibration fluid solid coupling of the hose utilizing classic laminated plate theory and classical fluid solid coupling theory were described.The influence of vibration parameters,structure parameters and fluid parameters on the pressure fluctuation of hydraulic hose outlet were analysed with simulation and experiment.Research results show that the amplitude of pressure fluctuation is peak when the excitation frequency of about 40 Hz is close to the natural frequency of hose,and the amplitude of pressure fluctuation increases linearly with amplitude of vibration.The influence of hose length on the pressure fluctuation of outlet is greater than that of the inner diameter.With the increase of the fluid velocity,pressure amplitude of the hose exit decreases gradually,and the fluid viscosity has less effect on pressure fluctuation.

关 键 词：缠绕式液压胶管 层合板理论 流固耦合 压力波动 振动 

分 类 号：TH137[机械工程—机械制造及自动化]