Short rolling contact fatigue and thermal cracks under frictional rolling – A comparison through simulations
作者： Sara Caprioli
DOI: 10.1016/J.ENGFRACMECH.2015.05.004
关键词:
摘要: The relative severity of radial (thermal) and inclined rolling contact fatigue surface cracks equal depth in a railway wheel is investigated by three-dimensional elastoplastic finite element analyses cracked sector subjected to loading. Response quantified displacements nodes close crack tip at the mouth. Highly give highest magnitudes shear displacements, which dominant deformation mode. Braking conditions are found open Initially higher temperatures on thermal cause increased opening crack, whereafter subsequent mechanical load cycles impose closure.
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