Crack nucleation and propagation modeling for lubricated spur gear contacts of rough surfaces

被引：10
|
作者：
Li, S. [1 ]
Kolivand, A. [1 ]
机构：
[1] Wright State Univ, Dept Mech & Mat Engn, 3640 Colonel Glenn Highway, Dayton, OH 45435 USA
来源：
MECHANISM AND MACHINE THEORY | 2022年 / 170卷
关键词：
RCF; Mixed lubrication; Crack nucleation; Crack propagation; Gear; FATIGUE MODEL; PREDICTION; SIMULATION; INITIATION;
D O I：
10.1016/j.mechmachtheory.2022.104726
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, a rolling contact fatigue model for lubricated gear contacts of rough surfaces is proposed, considering both crack nucleation and propagation stages. A boundary element approach is implemented to describe surface roughness topography effect on near surface stress concentration, with surface tractions yielded from mixed EHL analysis. A fatigue criterion is employed to find crack nucleation position and life. Assuming mode II crack opening mechanism, stress intensity factor range is determined and used to arrive crack propagation life. Through comparisons to experiments, model capability is demonstrated. Simulation results show important roughness effect on crack propagation as well as crack nucleation.
引用
收藏
页数：15
相关论文
共 50 条
12345