轴向受载的高速滚动轴承动态特性分析

根据Hertz接触理论和刚性套圈理论,建立了轴向受载时高速滚动轴承的力学模型,得到了组成该模型的动态特性方程组。针对传统Newton-Raphson迭代方法对所建立的动态特性方程组求解过程中对初值敏感、不易收敛和振荡的问题,提出了基于遗传算法的求解方法,并将所得结果与传统Newton-Raphson方法结果进行了对比。结果表明,遗传算法可以有效求解高速滚动轴承的动态特性方程组,避免了传统方法的缺点,提高了编程效率。

Dynamic characteristics of high-speed rolling bearing under axial load

Based on Hertz contact theory and rigid races method, a mechanical model of high-speed rolling bearing under axial load was established, and the dynamic characteristics equations for the model were obtained. In order to avoid sensitivity to initial value, non-convergence and oscillation problem during solving the established dynamic characteristics equations by using Newton- Raphson iteration method, a solution method based on genetic algorithm was proposed. The comparision results with the traditional NewtowRaphson method show that genetic algorithm is more effective to solve dynamic equations of high-speed rolling bearing with higher program efficiency.