低载强化对高强度汽车零件疲劳性能的影响  

Effect of Low-load Strengthening on the Fatigue Property of Automotive High Strength Parts

作　　者：卢曦[1] 郑松林[1] 

机构地区：[1]上海理工大学机械学院,上海200093

出　　处：《汽车工程》2006年第10期888-891,共4页Automotive Engineering

基　　金：国家自然科学基金项目(50375101);上海汽车工业科技发展基金(0329);上海理工大学博士启动基金资助。

摘　　要：通过试验研究了不同等级低幅载荷对某汽车齿轮单齿弯曲疲劳性能的影响,发现一定范围内的低幅载荷对单齿弯曲疲劳强度的强化效果确实存在,并且比较显著。在疲劳试验结果的基础上,通过数值插值方法,补充了试验数据,得到强化载荷与强化后疲劳寿命之间、强化次数与强化后的疲劳寿命之间的数学关系,并基于这两个二维关系式拟合得到低幅交变载荷作用下的三维强化曲面方程。The experimental study on the effect of low amplitude loading on bending fatigue strength of automotive transmission gears shows that the low amplitude loads within certain range really have marked strengthening effect on the bending fatigue strength of single teeth. By adding data on the basis of test result through mathematical interpolation, the relations of these two relations, a surface fitting. fatigue life with strengthening load and strengthening times are obtained. equation for strengthening under low amplitude alternating loads is derived Based on by surface

关 键 词：低载强化 高强度汽车齿轮 疲劳性能 强化方程 

分 类 号：U464.13[机械工程—车辆工程]