动压径向滑动轴承油膜力场的模拟与数值计算研究  

Simulation and Numerical Calculation on Pressure Field of Hydrodynamic Bearing

作　　者：张一磊 徐武彬[1] 李冰[1] 倪壮 ZHANG Yi-lei;XU Wu-bin;LI Bing;NI Zhuang(School of Mechanical Engineering,Guangxi University of Science and Technology,Guangxi Liuzhou545006,China)

机构地区：[1]广西科技大学机械工程学院

出　　处：《机械设计与制造》2020年第1期44-47,51,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金项目（50865001、51265004）;柳州科学研究与技术开发计划项目（2016C050202）;机械制造系统可靠性制广西高校重点实验室主任基金（2014JZKG004）;广西高等教育本科教学改革工程项目（2016JGZ139）

摘　　要：建立了滑动轴承数值计算模型和有限元模型,通过计算软件求解滑动轴承的油膜压力,分析比较了不同转速和不同偏心率下滑动轴承油膜压力场的分布和油膜压力极值的变化,并通过数值计算方法得到了稳定性临界曲线。计算结果表明:在转速一定时,随着偏心率的增加,油膜压力逐渐增大,压力极值增加,且增加速率逐渐增大;在偏心率一定时,随着转速的增加,油膜压力逐渐增加,压力极值呈线性增长。模拟结果和理论结果基本吻合,并进一步通过稳定性曲线与先前研究人员曲线和实验结果对比,更加验证所建立数值模型和有限元模型的准确性,为下一步研究形位误差对滑动轴承的影响提供依据。Both numerical model and finite element model of Hydrodynamic Bearing were established. The oil film pressure of bearing was solved out by means of commercial software,the distribution of oil film pressure and the change of the maximum oil film pressure under different rotational speed and eccentricity ratio were emphatically discussed. According to numerical calculation results,the stability map is plotted. The results show that,with the increase of eccentricity,the oil film pressure and the maximum pressure increases or the rate of either,when the speed retains constant. With the increase of rotational speed,the oil film pressure gradually increased and the maximum pressure linearly increases,when the eccentricity retains constant. The simulation results are in good agreement with the theoretical results,comparison of the stability map,previous researchers and experimental results shows that the established numerical model and finite element model are accurate and reasonable. All models can provide the basis for further research on how the shape and position error affect the performance of Hydrodynamic bearing.

关 键 词：滑动轴承 油膜力场 模拟仿真 数值计算 稳定性 

分 类 号：TH16[机械工程—机械制造及自动化] TH113