斜齿轮疲劳寿命及节点位移修形方法研究  

Research on Fatigue Life and Node Displacement Modification Method of Helical Gears

作　　者：李俞峰 李冬阳 吴鲁纪 葛世祥 杨永飞 常昊 Li Yufeng;Li Dongyang;Wu Luji;Ge Shixiang;Yang Yongfei;Chang Hao(ZRIME Gearing Technology Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]郑机所(郑州)传动科技有限公司,河南郑州450001

出　　处：《机械传动》2024年第5期10-15,共6页Journal of Mechanical Transmission

基　　金：国家重点研发计划(2020YFB2008100)。

摘　　要：针对齿轮传动系统疲劳寿命分析困难和修形局限性问题,通过Adams动力学仿真得到时域接触力曲线,并作为模拟分析载荷谱;结合有限元静态求解历程及齿轮材料的S-N曲线,在nCode中解析了斜齿轮副疲劳寿命;在应变分析引导的基础上,提出一种节点位移修形方法,对等分截面节点变形量进行K-Means聚类整合;利用最优象征节点位移的类指基函数拟合方法得到齿廓修正曲线,与轮齿受载产生的变形量高度吻合;相比于传统的直线型修形,疲劳寿命提高16.98%。将齿轮啮合过程中的受力不均载情况通过节点变形反馈,对渐开线齿廓进行有效修正,平衡啮合界面受力分布,延长疲劳寿命。In response to the difficulties in analyzing the fatigue life of gear transmission systems and the limitations of shape modification,the Adams dynamic simulation is used to obtain the time-domain contact force curve as the simulation analysis load spectrum.Combined with the finite element static solution process and the S-N curve of gear materials,the fatigue life of helical gear pairs is analyzed in nCode.On the basis of the strain analysis guidance,a node displacement modification method is proposed,which integrates the deformation of equidistant section nodes through K-Means clustering.The tooth profile correction curve is obtained by using the optimal symbolic node displacement class index basis function fitting method,which is highly consistent with the deformation generated by the load on the gear teeth.Compared with traditional linear modification,the fatigue life is increased by 16.98%.By providing feedback on the node deformation,the uneven load distribution during the gear meshing can effectively correct the involute tooth profile,balance the force distribution at the meshing interface,and extend the fatigue life.

关 键 词：动力学 载荷谱 疲劳寿命 节点位移 齿廓修正 

分 类 号：TH132.41[机械工程—机械制造及自动化]