摘要
研究了应力偶流体润滑滑动轴承性能的影响因素。分析了不同的动力参数、弹性系数与应力偶参数对轴承中截面周向油膜压力分布的影响,不同的弹性系数与动力参数对轴瓦承载力的影响以及承载力的作用角和摩擦系数随偏心率的变化。结果表明:动力参数越大,最大油膜压力越大,应力偶效应越显著;弹性系数越大轴承的承载力越小而应力偶参数与动力参数越大轴承的承载力越大;应力偶参数越大,承载力的作用角增大,摩擦系数减小。
We investigate the influential factors on the performance of journal bearings lubricated with couple stress fluids.We analyzed pressure distribution along the circumferential direction for various dynamic parameters,elastic coefficient and couple stress parameters,load-carrying capacity for various elastic coefficient and dynamic parameter,attitude angle and friction coefficient for various eccentricity ratio.The numerical results show that the value of the maximum pressure for a bearing increases with dynamic parameters,and the couple stress effect is more obvious.The bearing load-carrying capacity decreases with the increase of elastic coefficient and increases with the couple stress parameters or dynamic parameters.The couple stress makes the attitude angle increase and the friction coefficient decrease.
出处
《机械科学与技术》
CSCD
北大核心
2011年第9期1565-1568,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
上海高校选拔培养优秀青年教师科研专项基金项目(571123)资助
关键词
轴承
弹性
动力参数
应力偶参数
bearings
elasticity
dynamic parameter
couple stress parameter
