Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (6): 1652-1661.doi: 10.23940/ijpe.19.06.p16.16521661

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Resonance Reliability Analysis for Axle Box Bearing of EMU

Yonghua Lia,*, Pengpeng Zhib, Bingzhi Chena, and Ziqiang Shengb   

  1. a School of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian, 116028, China
    b School of Mechanical Engineering Dalian Jiaotong University, Dalian, 116028, China
  • Submitted on ;
  • About author:Yonghua Li is a professor in the School of Locomotive and Rolling Stock Engineering at Dalian Jiaotong University. Her research interests include fatigue reliability analysis of vehicle structures, digital simulation and optimization design of mechanical products, and RAMS engineering.Pengpeng Zhi is a Ph.D. candidate in the School of Mechanical Engineering at Dalian Jiaotong University. His research interests include CAE key technologies, fatigue reliability analysis of vehicle structures, uncertainty analysis, and optimization.Bingzhi Chen is a professor in the School of Locomotive and Rolling Stock Engineering at Dalian Jiaotong University. His research interests include railway vehicles engineering, virtual prototypes, numerical simulation, structure optimization, and biomechanics.Ziqiang Sheng is a master's student in the School of Mechanical Engineering at Dalian Jiaotong University. His research interests include reliability analysis of vehicle structures.
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (No. 51875073), the Education Project of Liaoning Provincial Department (No. JDL2017022), and Liaoning Provincial Natural Science Foundation of China (No. 20170540129).

Abstract: In order to study the influence of design variables on the resonance reliability of axle box bearings of electric multiple units (EMU), two methods of resonance reliability analysis of axle box bearings are proposed based on fuzzy reliability and probabilistic reliability. The randomness of the elastic modulus, Poisson's ratio, density, and speed of axle box bearings and the fuzziness of the resonance criteria are considered. The fuzzy reliability theory is introduced to analyze the resonance reliability of axle box bearings, and the resonance reliability equation is deduced and combined with the theoretical analysis of bearing vibration. Then, the resonance reliability of axle box bearings based on fuzzy theory is obtained. Based on this, the axle box bearing of EMU is parameterized by APDL language. The resonance reliability analysis of axle box bearings is carried out by using the Monte Carlo simulation (MCS) method based on the frequency interference model. The results show that the discreteness of the design variable and speed of axle box bearings have a negative influence on the resonance reliability of bearings, greatly increase the probability of resonance, and reduce the reliability of bearings. By comparing the results of resonance reliability analysis obtained by the probabilistic design method, the accuracy and practicability of the resonance fuzzy reliability analysis are verified, which provides a theoretical reference for the anti-resonance design of axle box bearings.

Key words: axle box bearings, resonance reliability, fuzzy reliability, frequency interference, probability design