中文摘要：

研究有限长的转子滑动轴承,转子在油膜的作用下产生油膜力,对静态非线性的状态下转子的垂直方向（y方向）和水平方向（x方向）的受力情况进行油膜力分析,同时建立转子轴承非线性动力学模型。结合非线性动力学理论和数值计算方法,获得了油膜力与结构参数变化的图形关系以及偏心率与smmerfeld无量纲综合载荷系数的图形关系,获得稳定的临界转速。获得结果：滑动轴承结构参数的改变对油膜力有较大的影响,分段插值和正交表获得了一组合适的数据,同时结合图形分析其轴承运行的稳定性,获得的数据是合理的。

英文摘要：

It studies the finite length of the rotor of hydrodynamic bearing, and the rotor is generated the oil film forces with the effects of oil film, under the conditions of the static nonlinear, and analyzes the oil film forces with the vertical direction （the direction of y） and horizontal direction （the direction of x）, while the nonlinear dynamic model of rotor system is established Combining the theory of nonlinear dynamics and numerical calculation method, and it obtains the relationship of oil film force and structure parameters change of graphics and the relationship of eccentricity and sommerfeld dimensionless load parameters of graphics ,obtaining the stability of critical speed Obtains the results that the hydrodynamic journal bearing structure parameters change has great influence on the oil film force, piecewise interpolation and orthogonal table obtains a set of suitable data, while combination with graphical analysis of the stability of operation of bearing, and the obtained of data is reasonable.