装甲车辆侧减速器齿轮接触疲劳寿命预测研究

Research on Gear's Contacting Fatigue Life Prediction of Side Reducer in Armored Vehicle

通过对根据典型路面实车试验获得的载荷数据进行雨流计数处理,编制了装甲车辆侧减速器齿轮所承受的扭矩谱和应力谱;充分考虑残余应力对齿轮接触疲劳极限的影响,通过强度和硬度之间的转换关系以及疲劳强度与残余应力的作用关系,得到了齿面沿深度方向的静强度以及接触疲劳强度分布;结合疲劳寿命分析技术,进行了齿轮疲劳寿命预测,其预测结果与实际规律相符合。

By dealing with the load data from vehicle test on typical terrain, this paper obtains the torque and stress spectrum bearing by the side reducer gear in armored vehicle. Considering the influence of the residual stress on the contacting fatigue limit, the distribution of strength and contacting fatigue limits in different depths were obtained by means of the distribution of residual stress and hardness as well as the relationship between strength and hardness. The gear＇s fatigue life was predicted by combining the fatigue life prediction technique. The prediction result is accorded with the actual rule.