吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (4): 799-810.doi: 10.13229/j.cnki.jdxbgxb20200903
• 车辆工程·机械工程 • 上一篇
赵洋1,2,3(),肖洋2,孙皓4,霍文浩4,冯松2,廖勇1()
Yang ZHAO1,2,3(),Yang XIAO2,Hao SUN4,Wen-hao HUO4,Song FENG2,Yong LIAO1()
摘要:
基于围道积分的方法提出了一种考虑润滑接触对的齿轮齿面微点蚀模拟方法,通过建立其二维有限元数值模型,研究微点蚀裂纹扩展过程中的损伤特征,即应力强度因子变化规律及最终齿面点蚀形貌。润滑接触对模型考虑了齿轮相互接触载荷、接触关系以及弹流润滑条件。在ABAQUS中计算得到裂纹尖端处的应力强度因子KI、KII以及扩展角θC,然后根据最大切向应力(MTS)准则计算等效应力强度因子Kσ 并作为裂纹扩展的判别条件,进一步地探讨不同润滑状态对微点蚀的形成影响。结果表明:齿轮间充分润滑时,KI和Kσ 随着裂纹长度的增加而快速增大,形成的点蚀坑更小;润滑不足时,KI和Kσ 随着裂纹长度变化缓慢,形成的点蚀区域更大。研究结果可为后续微点蚀齿轮的接触疲劳寿命分析、在线磨损监测以及啮合刚度计算提供理论支持。
中图分类号:
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