Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (1): 241-251.doi: 10.23940/ijpe.19.01.p24.241251

Previous Articles     Next Articles

Remaining Useful Life Prediction for Degradation Process of Gear System with Contact Damage Model

Jinhai Wangab, Jianwei Yangab*(), Qiang Lia, Hekai Zhub   

  1. a School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, China
    b Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicle, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
  • Revised on ; Accepted on
  • Contact: Jianwei Yang E-mail:yangjianwei@bucea.edu.cn
  • About author:<b>Jinhai Wang</b> is currently a Ph.D. candidate in the School of Mechanical, Electronic, and Control Engineering at Beijing Jiaotong University. His research interests include reliability analysis,nonlinear dynamics, and fault diagnosis of rotating machinery.<br/><b>Jianwei Yang</b> is currently a professor at Beijing University of Civil Engineering Architecture. He received his Ph.D. from China Academy of Railway Science in 2006. His research interests include vehicle system dynamics, failure modeling analysis, system reliability, and fault diagnosis. He is a senior member of CMES, the Great Scholars Project, and the Beijing Recognized Talent Project.|<b>Qiang Li</b> is currently a professor at Beijing Jiaotong University. His research interests include structural strength, reliability, and fatigue computation.|<b>Hekai Zhu</b> is a postgraduate student at Beijing University of Civil Engineering Architecture. His research focuses on the fatigue and reliability analysis of gear pairs.

Abstract:

Contact fatigue is one of the main causes of the failure of gear transmission systems. Considering the gear separation phenomenon, a contact damage-torsional vibration coupling dynamic model is proposed with nonlinear backlash, time-varying meshing stiffness, contact stress model, and contact damage model based on gear contact geometry, S-N curve, and reliability theory. Using the model established, the numerical simulation is investigated to analyze the degradation process of the gear system under a fixed-speed condition. The research results show that the degradation process of gear contact fatigue has a non-linear relation with rotational speed and rotation cycle. The contact stress shows that there is no obvious gear separation phenomenon at n=1000 and n=3000, but there are obvious gear separation phenomena at n=2000. The remaining useful life of gear teeth changes more violently and the total life is lowest at n=2000.

Key words: degradation process, gear dynamics, reliability assessment, remaining useful life prediction