摘要
以新型鼓泡箔片动压止推气体轴承为研究对象,采用有限差分法和Newton-Raphson迭代法通过Matlab软件编程求解流固耦合的数值模型,得到了同一温度下不同润滑气体以及同一润滑气体在不同温度下的轴承气膜压力分布、厚度分布和承载能力;研究了润滑气体物性参数对航空涡轮冷却器中箔片动压止推气体轴承静特性的影响规律。结果表明:动力黏度较大的润滑气体形成较大的气膜压力和气膜厚度分布,并产生较高的承载能力;随着轴承长时间高速运行产生的高温导致的润滑气体物性参数的改变有利于提高轴承的承载能力。
Taking the new type of protuberant foil hydrodynamic thrust gas bearing as the research object,the finite element method and the Newton-Raphson iterative method are used to solve the numerical model of fluid-solid coupling by MATLAB software. The film pressure distribution,the thickness distribution and the carrying capacity of the bearing under different temperature of the same lubricating gas and the same lubricating gas at different temperatures were obtained. And the influence of the physical properties of the lubricating gas on the static characteristics of the foil dynamic pressure thrust bearing in the aircraft turbo cooler is studied. The results show that the lubricating gas with large dynamic viscosity has a large gas film pressure and thickness distribution,and the higher carrying capacity. With the high temperature of the bearing running at high speed for a long time,the change of the physical parameters of the lubricating gas is conducive to improving the carrying capacity.
作者
卢攀
强萌
金文
周权
LU Pan;QIANG Meng;JIN Wen;ZHOU Quan(School of Energy and Architecture, Xi＇ an Aeronautical University, Xi＇ an 710077, China;School of Metallurgical Engineering, Xi＇ an University of Architecture and Technology, Xi＇an 710055, China;School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China)
出处
《机械强度》
CAS
CSCD
北大核心
2018年第3期749-753,共5页
Journal of Mechanical Strength
基金
陕西省自然科学基础研究计划项目(2017JM5076)
西安航空学院校级科研基金项目(2017KY1228)资助~~
关键词
润滑气体
动压止推轴承
承载能力
Lubricating gas
Aerodynamic thrust bearing
Carrying capacity
