考虑油液流变时变特性和深度特征尺寸的静压转台流动分析  

Flow Analysis of Static Pressure Turntable Considering Time-varying Characteristics of Oil Rheology and Depth Characteristic Size

作　　者：金玉峰 段鸾芳 吴伟伟[3] JIN Yu-feng;DUAN Luan-fang;WU Wei-wei(School of Intelligent Manufacturing,Changzhou Technician College Jiangsu Province,Changzhou,Jiangsu 213032;School of Electrical Engineering,Nanjing Vocational University of Industry Technology,Nanjing,Jiangsu 210023;School of Mechanical Engineering,Yangzhou University,Yangzhou,Jiangsu 225127)

机构地区：[1]江苏省常州技师学院智能制造学院,江苏常州213032 [2]南京工业职业技术大学电气工程学院,江苏南京210023 [3]扬州大学机械工程学院,江苏扬州225127

出　　处：《液压与气动》2024年第2期99-107,共9页Chinese Hydraulics & Pneumatics

基　　金：江苏省高校自然科学基金(22KJB460040)。

摘　　要：转台用液压油的非牛顿特性及随时间推移流变特性的变化,将影响油液在转台内的流动以及承载能力。以双环形静压转台为研究对象,针对油液的流变时变特性,提出了一种虚外力项LBM方法,并利用泊肃叶流的理论解进行了验证,通过仿真分析发现,双环形转台侧边入油口可有效增加中心凹槽的压力,改善承载能力。油液流变时变特性和转台深度特征尺寸是两个重要因素。相对于速度分布,封油边深度及油腔深度对承载能力的影响更加显著。随时间推移,油液黏度增大,使油液的流动减缓,速度减小,承载能力变弱,因此建议定期更换液压油,以保证转台的正常工作。The non-Newtonian behavior and changes in rheological properties over time of hydraulic oil used in the turntable will affect the flow in the turntable and load-bearing capacity.A double ring static pressure turntable is chosen as the research object,a virtual external force term LBM method was proposed for the rheological and time-varying characteristics of oil.The theoretical solution of Poiseuille flow was used to verify the proposed method.According to the simulation analysis,it was found that the side oil inlet of the double ring turntable can effectively increase the pressure in the center groove and improve the bearing capacity.The time-varying characteristics of oil rheology and the depth characteristic size of the turntable are two important factors.Compared to the velocity distribution,the depth of the sealing edge and the depth of the oil cavity have a more significant impact on the bearing capacity.The viscosity of the oil increases over time,the flow of the oil slows down,its speed decreases,and its load-bearing capacity weakens.Therefore,it is recommended to regularly replace the hydraulic oil to ensure the normal operation of the turntable.

关 键 词：流变时变特性 非牛顿特性 承载能力 深度特征尺寸 

分 类 号：TH137[机械工程—机械制造及自动化]