轴承接触应力计算与塑性屈服安定.pdf

学兔兔 兰 二 Z 轴承 2015年3期 Bearing 2015，No．3 7一l0 CN41—1148／TH 轴承接触应力计算与塑性屈服安定 杨成启，刘胜荣，褚园，钱胜 (黄山学院 机电工程学院，安徽 黄山 245041) 摘要：滚动轴承接触应力分析计算过程比较繁杂，通过理论分析和数值拟合，给出了接触曲率函数与接触椭圆 率的关系，利用接触曲率函数直接计算出接触椭圆率，使接触计算变得相对简化。同时，对接触区上关键点的 应力状态进行计算，建立了接触材料屈服强度和屈服安定校核方法。对不同的轴承接触模型，给出曲率函数计 算公式，并通过具体的实例计算了接触椭圆率。 关键词：滚动轴承；接触应力；接触椭圆率；曲率函数；屈服安定；数值拟合 中图分类号：TH133．33；TH123 ．4 文献标志码：A 文章编号：1000—3762(2015)03—0007—04 Calculation on Contact Stress and Plastic Yield Stability in Bearings Yang Xianqi，Liu Shengrong，Chu Yuan，Qian Sheng (School of Mechatronics Engineering，Huangshan College，Huangshan 245041，China) Abstract：The rolling is complex in analysis and calculation process of beating contact stress．The relationship be— tween contact curvature function and contact elliptical rate is given through theoretical analysis and numerical fit— ting．The contact elliptical rate is directly calculated by using contact curvature function，which makes the contact calculation relatively simplified．At the same time，the stress state of key points on contact area is calculated．The checking method is established for yield strength and yield stability of contact materia1．The formula，for curvature function is given for different bearing contact models，and the contact elliptical rate is calculated through a specific example． Key words：rolling beating；contact stress；contact elliptical rate；curvature function；yield stability；numerical fitting 工程实践中2个相互接触的物体承受较大载 触和线接触。球轴承或调心滚子轴承中滚动体与 荷的情况较常见，如轴承零件内部接触、齿轮啮合 套圈滚道接触是典型的2个光滑的