Fatigue life prediction of high-speed railway bearing based on contact stress

摘要

In view of the long life and high reliability of high-speed railway bearing, a fatigue life calculation method based on contact stress is proposed by adopting fatigue theory design. Firstly, the load distribution of high-speed railway bearing under radial force and axial force is obtained. Then, the maximum contact stress is obtained by using Hertz contact theory, and the fatigue life value of the bearing is obtained by combining the contact fatigue life curve. By calculating the fatigue life values under different radial loads, different running speeds of train, and compared with the theoretical method of fatigue life of classics, proved that the method is effective, to make up for the defect of the theory of classical methods of fatigue life.