CAJ | 학술논문

考虑润滑油的温黏效应,建立止推轴承热流润滑分析数学模型,得到平面形面、圆柱形面、横弯形面、反横弯形面、球形形面和马鞍形面6种瓦面形面的止推轴承油膜压力分布和温度分布,并对不同膜厚、倾角和转速条件下轴承的承载能力和油膜温度变化规律进行数值分析.计算结果表明,随着膜厚增加,轴承承载能力和油膜最高温度迅速减小;随着倾角的增加,承载能力明显增加,油膜温度降低;随着转速的增加,油膜承载能力和温度明显增加.轴瓦形面对油膜承载能力和油膜温度分布影响明显,相对于平面瓦面,圆柱形瓦面具有较小的温升和较高的承载能力,而横弯形面轴瓦性能最差,温升最高,承载能力最低.
고필윤활유적온점효응,건립지추축승열류윤활분석수학모형,득도평면형면、원주형면、횡만형면、반횡만형면、구형형면화마안형면6충와면형면적지추축승유막압력분포화온도분포,병대불동막후、경각화전속조건하축승적승재능력화유막온도변화규률진행수치분석.계산결과표명,수착막후증가,축승승재능력화유막최고온도신속감소;수착경각적증가,승재능력명현증가,유막온도강저;수착전속적증가,유막승재능력화온도명현증가.축와형면대유막승재능력화유막온도분포영향명현,상대우평면와면,원주형와면구유교소적온승화교고적승재능력,이횡만형면축와성능최차,온승최고,승재능력최저.
With consideration of thermo-viscosity effect,a mathematical model of thermo-hydrodynamic lubricated thrust bearings was presented. Oil film pressure and temperature distributions were obtained for six kinds of pad shapes including plane shape,cylinder shape,transverse bend shape,anti-transverse bend shape,spherical shape and saddle shape. Influ-ences of film thickness,pad inclining angle and angular velocity on maximum film temperature and load capacity were nu-merically analyzed. The results show that oil film temperature reaches the maximum value at the outlet of pad outside radi-us. Both load capacity and maximum film temperature are decreased with the increasing of film thickness,while increased with the increasing of angular velocity. Load capacity is increased obviously and maximum temperature is decreased with the increasing of pad inclining angle. Pad face shape has a significant influence on load capacity and film temperature. Compared to the plane pad shape,the cylinder pad shape presents better lubricating performance with smaller temperature rise and larger load capacity,while the transverse bend pad shape leads to worse lubricating performance with larger tem-perature rise and lower load capacity.