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- W2789061750 abstract "In order to study the influences of defective rail welding joints on wheel/rail interaction, a transient finite element model of a high-speed train passing over rail welding joints is presented on the basis of field measurements. Focusing on the physical mechanisms differences of wheel/rail rolling contact on welding joints with varying rail straightness at rolling speeds of up to 400 km/h, this model takes vehicle/track system dynamics and wheel/rail elastic–plastic deformations into account. The defective thermite welding joint with short wave irregularity easily leads to rail nucleus flaw with residual stress. When the running speed is over 250km/h,the maximum value of wheel/rail vertical force at welding joint has a basic trend of a bilinear increase with the increase of running speed and the unevenness of the welding joint. There is a phase difference between the maximum contact force and the peak joint irregularity. When the high-speed railway operation management standard is 250~350km/h, the short wave irregularity at rail welding joint with over 0.3mm straightness should be grinded." @default.
- W2789061750 created "2018-03-06" @default.
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- W2789061750 date "2018-02-26" @default.
- W2789061750 modified "2023-09-28" @default.
- W2789061750 title "A Transient Finite Element Model to Simulate the Physical Mechanisms of High-speed Wheel/rail Rolling Contact on a Rail Welding Joint" @default.
- W2789061750 doi "https://doi.org/10.22323/1.300.0040" @default.
- W2789061750 hasPublicationYear "2018" @default.
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