Journal of Northeastern University(Natural Science) ›› 2023, Vol. 44 ›› Issue (8): 1128-1135.DOI: 10.12068/j.issn.1005-3026.2023.08.009

• Mechanical Engineering • Previous Articles     Next Articles

Reliability Sensitivity Analysis of the Fatigue Life of Wind Turbine Bearings

HU Bing1, HUANG Xian-zhen1,2, DU Shan-shan3   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion Systems,Ministry of Education,Northeastern University,Shenyang 110819, China; 3. Wind Power Bearing Division, Wafangdian Bearing Group Co., Ltd., Wafangdian 116300, China.
  • Published:2023-08-15
  • Contact: HUANG Xian-zhen
  • About author:-
  • Supported by:
    -

Abstract: A 2MW wind turbine bearing is taken as an example, and the mathematical model of the fatigue life of cylindrical roller bearings under four degrees of freedom load is given. The accuracy of the model is verified by Romax software analysis results. The limit state equation is established according to the minimum rated life of the bearing, and the adaptive Kriging-Monte Carlo simulation (AK-MCS) method is used to analyze the reliability sensitivity of the bearing′s fatigue life. The results show that the bearing failure probability increases with the increase of bearing clearance, elastic modulus and density. With the increase of bearing pitch and roller finite length, the failure probability of bearings decreases. The influence of clearance on reliability is the most obvious, followed by elastic modulus, density and roller finite length, and the influence of pitch is the least.

Key words: cylindrical roller bearing; bearing fatigue life; AK-MCS; reliability sensitivity analysis; wind turbine

CLC Number: