机械科学与技术2012，Vol.31Issue(9)：1434-1438,5.
基于CFD的液压锥阀振动原因分析
Analysis on Reasons Causing Vibration of Hydraulic Poppet Valve Based on CFD
李惟祥 1邓斌 1刘晓红 1柯坚 1刘桓龙1
作者信息
- 1. 西南交通大学机械工程学院,成都610031
- 折叠
摘要
Abstract
The dynamic mathematical model of cartridge inserted hydraulic poppet transient simulations are carried out by CFD software for both practical poppet valve valve is set up. Its steady and vibrating strongly and its modi- fled structures. The reasons causing poppet valve vibration are researched. The modeling analysis result shows that the steady-state hydraulic flow force which makes the valve opening is one of the primary reasons that intensify valve vibration. The steady CFD simulation results show： the steady-state flow force of original poppet valve increases firstly and reduces later with the opening of valve port, but the force＇s direction is always upward, which makes the spool of poppet valve has the tendency to open, this could be the reason why the valve vibrates strongly. The transi- ent calculation results indicate that the modified valve structures can reduce vibration indeed, but these structures will cause more negative pressure, which may leads to the cavitations and cavitations＇ noise.关键词
液压锥阀/振动/稳态液动力/计算流体动力学Key words
poppet valve/vibration/steady-state flow force/CFD ( computational fluid dynamics)分类
机械制造引用本文复制引用
李惟祥,邓斌,刘晓红,柯坚,刘桓龙..基于CFD的液压锥阀振动原因分析[J].机械科学与技术,2012,31(9):1434-1438,5.
