Investigation into Multiaxial Character of Thermomechanical Fatigue Damage on High-Speed Railway Brake Disc

The multiaxial character of high-speed railway brake disc thermomechanical fatigue damage is studied in this work. Although the amplitudes and distributions temperature, strain stress are similar with uniform rotating loading methods, behavior out-of-phase failure status can only be revealed by latter one. With help a model, evaluation life prediction implemented, contribution uniaxial parameter, parameter to total discussed, it found that using amplitude distribution for will lead an underestimation damage. results indicate belongs type fatigue. Using causes around 14% damage, while employing without consideration about 5%. This work explains importance studying from perspective