湖南大学学报（自然科学版）2017，Vol.44Issue(10)：41-49,9.DOI:10.16339/j.cnki.hdxbzkb.2017.10.006
多孔质石墨静压气体推力轴承静态特性
Institute of Static Characteristics of Porous Graphite Aerostatic Thrust Bearings
摘要
Abstract
A theoretical calculation model was established to study the static characteristics of porous graphite aerostatic thrust bearings.Based on the proposed model,the effect of the related factors,such as porous density,surface-restricted layer,external gas pressure and mass flow rate on the static characteristics of porous aerostatic thrust bearings was analyzed.Theoretical calculation results show that the load-carrying capacity of the bearing is negatively correlated with the graphite density and positively correlated with the gas supply pressure,but it is smaller than that of the surface-restricted layer.Gas mass flow rate is negatively correlated with the graphite density and positively correlated with the gas supply pressure,but it is also smaller than that of the surface-restricted layer.Bearing stiffness is positively correlated with the gas supply pressure and graphite density,but it is smaller than that of the surface-restricted layer.According to the results,corresponding function diagrams were plotted.The test rig was then designed to plot the static characteristic curve of porous aerostatic thrust bearings,including the load-carrying capacity and gas film thickness.The numerical method was eventually verified by the experimental results.关键词
多孔质石墨/静压气体推力轴承/静态特性/密度/限制层Key words
porous graphite/aerostatic thrust bearings/static characteristics/density/surface-restricted layer分类
机械制造引用本文复制引用
冯凯,朱友权,李文俊,赵雪源,张凯..多孔质石墨静压气体推力轴承静态特性[J].湖南大学学报（自然科学版）,2017,44(10):41-49,9.基金项目
国家自然科学基金资助项目(51575170),National Natural Science Foundation of China (51575170) （51575170）
国家科技支撑计划资助项目(2015baf32b01),National Key Technology Support Program of China (2015baf32b01) （2015baf32b01）
