Research on Influence of Cavity Depth on Load Capacity of Heavy Hydrostatic Bearing in Variable Viscosity Condition

摘要：

Owing to setting viscosity of lubrication oil as a constant value will lead errors in hydrostatic bearing calculation, the influence of cavity depth on load capacity of heavy static bearing is analyzed in variable viscosity condition. Firstly, viscosity-temperature equations of oil film are established; secondly, viscosity-temperature curve is fitted by B-Spline; finally, using finite volume method, hydrostatic pressure field and dynamic pressure field of heavy hydrostatic bearing is calculated with different cavity depth at the same velocity, and influence of cavity depth on load capacity is revealed. The results show that, were the cavity depth shallow enough(≤2mm), hydrostatic pressure and dynamic pressure of cavity would decline rapidly with the cavity depth increasing; whereas, were cavity deep enough(≥2mm), hydrostatic pressure and dynamic pressure of cavity would change little with the cavity depth extending. This numerical simulation reflects real distribution of bearing pressure appropriately, and provides a theoretical basis for hydrostatic bearing design and lectotype.

关键词： heavy hydrostatic bearing FVM variable viscosity pressure field

作者: Yanqin Zhang Xiaodong Yang Hongmei Li Hui Jiang Xiaoyang Yu Zhimin Shi

作者单位: Harbin University of Science and Technology,Harbin,Heilongjiang Province,China Commissioning Report China Academy of Railway Sciences,Beijing,China Qiqihar Heavy CNC Equipment Corp.LTD.,Qiqihar,Heilongjiang Province,China

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 1181-1185

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）