摘要
以螺旋槽小孔节流动静压气体轴承为研究对象,运用变分法求解雷诺方程,利用Fluent软件对轴承静态特性进行仿真分析,研究供气压力、偏心率、转速以及节流孔直径、螺旋槽宽度和深度对轴承静态特性的影响规律。结果表明:相同偏心率下,随供气压力的升高,轴承静态特性增强;相同供气压力下,偏心率越大,承载能力越高,刚度越小;螺旋槽能够显著提高轴承静态特性,且转速越大,螺旋槽对轴承的动压效应越好;保证其他结构参数不变,轴承静态特性随螺旋槽宽度的增加先增大后减小,螺旋槽深度和节流孔直径越小越有利。
Taking the spiral groove small orifice throttle hybrid gas bearing as the research object,the Reynolds equation was solved by the variational method,and the static characteristics of the bearing were simulated and analyzed by Fluent software.The influence of air supply pressure,eccentricity,rotating speed and orifice diameter,spiral groove width and depth on the static characteristics of the bearing was studied.The results show that under the same eccentricity,the static characteristics of the bearing are increased with the increase of the air supply pressure.Under the same air supply pressure,the larger the eccentricity,the higher the bearing capacity and the smaller the stiffness.The spiral groove can significantly improve the static characteristics of the bearing,and the greater the rotating speed,the better the dynamic pressure effect of the spiral groove on the bearing.When the other structural parameters remain unchanged,the static characteristics of the bearing are first increased and then decreased with the width of the spiral groove,and the smaller the depth of the spiral groove and the diameter of the orifice,the better.
作者
王欣崎
李博
李树森
贾勇
WANG Xinqi;LI Bo;LI Shusen;JIA Yong(School of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin Heilongjiang 150040,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2021年第3期51-56,62,共7页
Lubrication Engineering
基金
黑龙江省自然科学基金项目(E2018001)。
关键词
动静压气体轴承
小孔节流
螺旋槽
静态特性
hybrid gas bearing
orifice throttling
spiral groove
static characteristics
