Research on the effect of rail cant on the dynamic performance and wear characteristics of subway vehicles

Li, Hongxiao; Li, Li; Li, Zheng

doi:10.1016/j.engfailanal.2023.107478

Cited by 4 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is quite difficult to test the forces of the rail from the train, and the simulation and calculation for the forces are particularly important. A dynamic model of a train-track system based on the actual parameters of the trains on the test track was established by Ansys [15][16][17]. The vehicle model mainly consisted of one car body, two bogie frames, four wheelsets, eight axle boxes, and primary and secondary suspension systems.…”

Section: Simulation and Calculationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail

Shi,

Liu,

Yang

et al. 2023

Coatings

View full text Add to dashboard Cite

The effects of cyclic loading on the surface microstructure evolution of different contact locations in a used pearlitic rail were studied. Microstructures were analyzed using Scanning Electron Microscopy (SEM). Meanwhile, grain boundaries and crystallographic orientations were explored via Electron Backscatter Diffraction (EBSD). At last, wheel–rail contact probabilities and forces were calculated using rail profiles. The results indicate that the side wear region located in the gauge face was 71.5% in the high-angle grain boundaries (HAGBs) fraction, 0.88 in the Kernel Average Misorientation (KAM) value, 36% in the recrystallization (REX) fraction, and had a predominant orientation in grains. The rolling contact fatigue (RCF) region situated at the gauge corner was 66.3% in the HAGBs fraction, 0.92 in the KAM value, 33% in the REX fraction, and was mis-orientated in grains. The region located at the edge of the running band was 60.7% in the low-angle grain boundaries (LAGBs) fraction, 0.97 in the KAM value, 12% in the REX fraction, and was mis-orientated in grains. Continuous dynamic recrystallization (cDRX) took place in wear and RCF regions during the cyclic rolling contact loading, creating ultra-fine grains with a transformation from LAGBs to HAGBs, lower KAM values, and more REX. Grains oriented along [111] parallel to the vertical direction in the wear region were influenced by the dominant normal force, while grains in the RCF region were non-oriented, which was attributed to large lateral and vertical forces of similar magnitudes.

show abstract

Section: Simulation and Calculationmentioning

confidence: 99%

“…Furthermore, Hertz theory and the FASTSIM algorithm were used to calculate the contact patch and creep forces for the wheel-rail contact mode [17,18]. Using dynamic simulation, wheel-rail contact distributions and probabilities based on both the rail's actual tested profile and its standard profile were calculated.…”

Section: Simulation and Calculationmentioning

confidence: 99%