液压与气动Issue(10)：89-95,7.DOI:10.11832/j.issn.1000-4858.2017.10.015
液压缸缓冲动态特性对比研究
Comparative Study on Dynamics Performance for Cushion Process of Hydraulic Cylinder
王传瑶 1王勇勤 1罗远新 1严兴春 1温亚1
作者信息
摘要
Abstract
In the condition of low speed and heavy load,a buffer device is usually set to prevent from the striking of piston and casting wall in the end of the trip.To study the influence of the physical quantities on the dynamic characteristics of the buffer,we divide the buffer process into three phases:local pressure loss,sharp edges throttle and variable throttle.In order to accurately describe the switching process among them,the mathematical models and switching standards for each phase are established.The software Fluent is used to analyze the dynamic cushion process under the consideration of the fluid-structure coupling effect between the piston and the flow field.Finally we compare the numerical solution and simulation solution to get the results.The analysis results show that the numerical results and simulation results have a good consistency,the end clearance and external load have obvious influence on the cushion process.关键词
液压缸/缓冲过程/动态/CFDKey words
hydraulic cylinder/cushion process/dynamic/CFD分类
机械制造引用本文复制引用
王传瑶,王勇勤,罗远新,严兴春,温亚..液压缸缓冲动态特性对比研究[J].液压与气动,2017,(10):89-95,7.
