Analysis of subsurface crack propagation under rolling contact loading in railroad wheels using FEM
作者： Yongming Liu , Liming Liu , Sankaran Mahadevan
DOI: 10.1016/J.ENGFRACMECH.2007.02.012
关键词:
摘要: A general subsurface crack propagation analysis methodology for the wheel/rail rolling contact fatigue problem is developed in this paper. three-dimensional elasto-plastic finite element model used to calculate stress intensity factors wheels, which a sub-modeling technique achieve both computational efficiency and accuracy. Then damage wheel calculated using previously mixed-mode model. The advantages of proposed are that it can accurately represent complex mechanical components consider effect loading non-proportionality. effects diameter, vertical amplitude, initial size, location orientation on factor range investigated prediction results compared with in-field observations.
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