摘要
为了对圆锥螺旋槽气浮动压轴承的动特性进行研究,在建立数学模型的基础上,运用有限差分法对扰动控制方程及其阻尼系数和刚度系数进行了有限差分表达式的推导计算;利用VB6.0对该轴承的转速及偏心率等参数对轴承的18个动特性系数的影响进行了数值求解分析。结果表明:气浮动压轴承的刚度系数和阻尼系数随着轴承转速的增大有明显增大的趋势,但随着偏心率增大,变化却各不相同;圆锥螺旋槽气浮动压轴承在较大偏心率下有更好的工作稳定性。
In order to research the dynamic performance of conical spiral groove aerodynamic bearings,on the basis of mathematical model establishment,the finite difference expression of the control equation and stiffness coefficient and damping coefficient is derived by finite difference method.The effects of speed and eccentricity on eighteen dynamic characteristic coefficients of the bearings are numerically analyzed by VB6.0.The results show that the stiffness coefficient and damping coefficient of aerodynamic bearings are obviously increased with the speed,but the changes are different with the increase of eccentricity.The conical spiral groove aerodynamic bearings have better working stability under higher eccentricity.
出处
《轴承》
北大核心
2011年第11期10-14,共5页
Bearing
基金
陕西省教育厅专项基金项目(11JK0881)
关键词
气浮动压轴承
有限差分
动特性
阻尼系数
刚度系数
aerodynamic bearing
finite difference
dynamic performance
damping coefficient
stiffness coefficient
