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摘要
This paper provides a method for solving thermal fatigue crack growth in the rail wheel under stop braking spectrum. The analysis was performed in three stages. In the first stage, a finite element model of the rail wheel is used for all braking applications. For each application, a non-linear thermal stress analysis is performed. The second stage of the sequential analysis is carried out to calculate the stress intensity factor of thermal cracks, by using a semi-analytical solution technique that involves the use of an analytical solution combined with a numerical algorithm to assess fracture strength. In the third stage, a generalised Frost-Dugdale approach has been used to modelling thermal fatigue crack growth.
- 出版日期2012-10
