不同工况下的液体静压轴承油膜动力特性分析  

Analysis of Dynamic Characteristics of Oil Film of Hydrostatic Bearings under Different Working Conditions

作　　者：唐奇胜 尹洋 任登洲 Tang Qisheng;Yin Yang;Ren Dengzhou

机构地区：[1]西华大学机械工程学院,四川省成都市610039

出　　处：《工程机械》2025年第4期117-121,I0006,共6页Construction Machinery and Equipment

基　　金：四川省科技厅重点研发项目(2017GZ0356)。

摘　　要：以小孔节流液体静压轴承为研究对象,对其不同工况下的油膜特性进行分析。通过Fluent仿真计算采用小扰动的方法对不同工况下的小孔节流液体静压轴承油膜特性进行了分析。结果表明:主轴转速对直接刚度系数和直接阻尼系数的影响较小,但对交叉刚度系数和交叉阻尼系数影响都较大;供油压力对直接刚度系数和直接阻尼系数的影响幅度较大;但对交叉刚度系数交叉阻尼系数的影响幅度较小;偏心率对8个动力特性系数都有着比较明显的影响。With the orifice restriction hydrostatic bearing as the research object,its oil film characteristics under different working conditions are analyzed.The oil film characteristics of the orifice restriction hydrostatic bearing under different working conditions are analyzed by Fluent simulation calculation and smallperturbation method.The results show that,the spindle speed has a minor effect on the direct stiffness coefficient and direct damping coefficient,but a major effect on the cross stiffness coefficient and cross damping coefficient;the oil supply pressure has a major effect on the direct stiffness coefficient and direct damping coefficient,but a minor effect on the cross stiffness coefficient and cross damping coefficient;the eccentricity has an obvious effect on the eight dynamic characteristic coefficients.

关 键 词：液体静压轴承 数值模拟 油膜特性 

分 类 号：TU3[建筑科学—结构工程]