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滑动轴承承载能力的计算是建立在雷诺方程基础上,雷诺方程是一二维流动二阶偏微分方程,其求解非常复杂,目前国内外教材及工程计算仍采用传统的一九○四年A sommerfeld解,即无限长轴径假设,把二维雷诺方程变为一维雷诺方程乘上一个端泄系数来求得解析解,显然有很大的近似性。用有限差分法把二阶偏微分方程化为一组差分方程作数学上近似,最后归结求解线性方程组,由于电子计算机的应用,使这种数值方法可以达到所希冀的精度。结果可求出油膜压力的空间分布及承载能力,亦可用来作动压轴承的设计,得出最佳的设计参数。
The calculation of bearing capacity of sliding bearings is based on the Reynolds equation, which is a two-dimensional flow of second-order partial differential equations, the solution is very complicated, the current domestic and international teaching materials and engineering calculations are still using the traditional 1904 A sommerfeld The solution, ie the assumption of an infinitely long axis of diameter, turns the two-dimensional Reynolds equation into a one-dimensional Reynolds equation multiplied by an end-leakage coefficient to obtain the analytic solution, apparently having a large approximation. Finite difference method to the second-order partial differential equations into a set of differential equations for mathematical approximation, and ultimately solves the linear equations, the application of electronic computers so that this numerical method can achieve the desired accuracy. The results can be obtained oil film spatial distribution and bearing capacity, can also be used for dynamic pressure bearing design, come to the best design parameters.