摘要
利用ANSYS对L形航空液压管道进行仿真分析,研究装配不同数量卡箍及卡箍约束不同位置对L形管道固有频率的影响。分析添加不同数量卡箍后管道在脉动流体作用下最大范式应力的变化。结果表明:在管道长度一定的情况下,适当增加卡箍数量以及改变卡箍的约束位置对于管道频率有明显的提高效果;随卡箍数量的增加,管道在脉动流体作用下的最大范式应力逐渐减小,但卡箍约束对管道流体脉动最大应力的影响幅值降低。
ANSYS was used to simulate and analyze the L-shaped aviation hydraulic pipeline,and the influence of different num⁃bers of clamps and different positions of clamp restraints on the natural frequency of L-shaped pipes were studied.The maximum para⁃digm stress changes of the pipeline under the action of pulsating fluid after adding different numbers of clamps were analyzed.The re⁃sults show that when the length of the pipeline is fixed,appropriately increasing the number of clamps and changing the restraint posi⁃tion of the clamps can significantly improve the frequency of the pipeline;with the increase of the number of clamps,the maximum paradigm stress of the pipeline under the action of pulsating fluid gradually decreases,but the influence amplitude of clamp constraints on the maximum stress of pipeline fluid pulsation decreases.
作者
周知进
丁一
林家祥
薛金鑫
ZHOU Zhijin;DING Yi;LIN Jiaxiang;XUE Jinxin(School of Mechanical and Traffic Engineering,Guangxi University of Science and Technology,Liuzhou Guangxi 545006,China;School of Mechanical Engineering,Guizhou Institute of Technology,Guiyang Guizhou 550000,China)
出处
《机床与液压》
北大核心
2021年第24期37-40,共4页
Machine Tool & Hydraulics
基金
国家自然科学基金面上项目(51479073)。
关键词
L形管道
卡箍
固有频率
流固耦合分析
L-shaped pipe
Clamp
Natural frequency
Fluid-structure coupling analysis
作者简介
周知进(1969-),男,博士,教授,主要研究方向为机械系统动力学及控制。E-mail:zjzhou@hnust.edu.cn。
