High Frequency Vibrations in The Elements of the Rolling Stock on the Railway Bridges

Loktev, Alexey; Korolev, Vadim; Shishkina, Irina

doi:10.1088/1757-899x/463/3/032019

Cited by 43 publications

(11 citation statements)

References 1 publication

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“…The calculated values of the eccentricity of contact ellipses were е=0.82 ÷ 0.999, and only in eight contact variants there were areas with е < 0.9. For values of е 0.9, the stress state parameters in the contact of the wheel and the frog differ little from those obtained from the condition of contact in an infinite strip (e = 1.0) [11,12,13]. So, it can be obtained that the magnitudes of the highest stresses calculated within this limit of the change in eccentricities (0.9≤е≤1.0) differ by no more than 4.8%.…”

Section: Research Techniquementioning

confidence: 78%

Contact stresses in point frogs

Glusberg¹,

Korolev

Lokteva

et al. 2020

E3S Web Conf.

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Section: Research Techniquementioning

confidence: 78%

Contact stresses in point frogs

Glusberg¹,

Korolev

Lokteva

et al. 2020

E3S Web Conf.

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“…The graphs show that with increasing wear from 4 to 9 mm in the same metal layers, the number of cracks increases, then with wear of 12 mm the number of cracks decreases slightly. This is explained by the fact that during the growth of cracks, part of them can merge, forming cracks of greater length, while the number of cracks will decrease, and their total length will increase [13,14]. Therefore, it is more correct to analyze not the number of cracks, but their total length.…”

Section: Research Technique and Resultsmentioning

confidence: 99%

Hardening features for high manganese steel cores of crosspieces along the way

Shishkina

2020

E3S Web Conf.

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Herein are established main regularities of steel hardening and defect formation for the working conditions of cross-pieces along the way in order to be able to further reduce the number of samples without losing informativity about the metal functioning of cross-piece. The change in the hardness of the metal along the depth of the cross section at the stage of steady wear occurs with the wear rate of the cross-piece. From the surface of the cross into the depths of the cross section, the hardness of the metal decreases. The rule of change can be considered linear. The generalized results of studies of susceptibility of cross-pieces metal for defects showed that the processes of contact defect occurrence and their expansion on the cross-pieces are fatigue-like.

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“…The levels of dynamic effects that occur during the passage of carriages by the rail-way switch significantly depend on the relative position of the wheelsets and elements of the switch, which is determined by the combination of their basic geometric dimensions [7].…”

Section: Methodsmentioning

confidence: 99%

Switch operation safety

et al. 2019

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The article studied the safety of passing the rolling stock by railway switches. On railway switches, counter rails provide the safe passage of the rolling stock by the wheelsets through the harmful space of the cross. The levels of dynamic effects arising from the passage of carriages by the railway switch significantly depend on the relative position of the wheelsets and elements of the switch, which is determined by the combination of their main geometric dimensions. To calculate the most unfavorable combinations of wheelset and gauge dimensions, taking into account the tolerances adopted for these dimensions, the method of probability compositions is used, based on the application of the theory of probability. The calculating apparatus of the approach using conditional probabilities of events based on the formulas of total probability and Bayes formula. The level of impact of the wheels on the counter-rail is regulated by rationing the values of the “impact effect” on the bent and catching parts of the counter-rail.

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High Frequency Vibrations in The Elements of the Rolling Stock on the Railway Bridges

Cited by 43 publications

References 1 publication

Contact stresses in point frogs

Contact stresses in point frogs

Hardening features for high manganese steel cores of crosspieces along the way

Switch operation safety

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