Investigation of Coupling Strength at Non-Central Interaction of Railcars

Швець, Анжела Олександрівна

doi:10.1007/s11223-022-00396-1

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…Номінальна жорсткість при згинанні кузова піввагона дорівнює приблизно потрійній жорсткості хребтової балки (за відповідними напрямами) [29]. У роботах [17,31] встановлені найбільш несприятливі, з погляду міцності, перерізи автозчепного пристрою. Відповідно до механічних властивостей матеріалу корпусу автозчеплення найменша жорсткість на згин у зоні провушин корпусу автозчеплення.…”

Section: рис 2 схема вантажного вагона з урахуванням його ваги та реж...unclassified

Determination of the form of loss the freight cars stability taking into account the gap in the rail track

Швець¹

2022

OMTC

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Derailments of freight cars occur for various reasons: breakdown of equipment or individual parts; maintenance deviations in the track superstructure; incorrect order of passing and making-up trains; violation of normal dynamic conditions, which occurs due to hunting and unfavorable traffic conditions on a curved track section. In order to avoid derailments and ensure a stability coefficient, the restrictions expressed using certain indicators are set. These indicators determine the conditions for lifting the wheel above the rail head, overturning the rail and widening the railway track. One of the most widely used restrictions is the restriction expressed in terms of the ratio of the lateral force acting on the wheel to the vertical force.Rolling stock derailment when the wheel flange is rolled onto the rail head, as a rule, is facilitated by longitudinal compressive forces.The presence of longitudinal forces in the train results in unloading the wheels moving along the outer rail line, and overloading the wheels moving along the inner rail line.The stability loss of freight cars as part of a train should be divided into two stages: stability loss of the body on suspension springs and the stability loss of the wheel set, which results directly in the derailment. The work is aimed to study the influence of longitudinal quasi-static compressive forces arising during stationary modes of train movement on the form of freight cars’ instability. The relevance of this study relates to the need to control the longitudinal forces arising during the train movement, taking into account the increase in speeds, masses and lengths of trains, especially freight trains, by in the locomotives power increase. The use of the above methodology will improve the stability of freight rolling stock, justify the cause of derailment, as well as develop and put into practice technical measures to prevent the lift of the carriages, widening and shear of the track.

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Section: рис 2 схема вантажного вагона з урахуванням його ваги та реж...unclassified

Determination of the form of loss the freight cars stability taking into account the gap in the rail track

Швець¹

2022

OMTC

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“…Studies [32][33][34][35][36][37] are devoted to the modernization and other design of coupling devices and mechanisms of undercar braking equipment of freight cars. Also, a sufficient number of works [38][39][40][41][42][43][44][45][46][47] are devoted to the improvement of freight car bogies and their components.…”

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Ways of improving of freight car design

Sulym,

Safronov,

Strynzha

et al. 2024

TST

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The article presents the dynamics of freight cars production by domestic enterprises by years. The necessity of renewal of the domestic operating fleet of freight cars.The following main vectors of design improvement have been identified based on the results of putting new and modified freight car models into production: use of high-strength steels in load-bearing structural elements and innovative components; improving existing and creating fundamentally new bearing structures; the most efficient use of space; development of freight cars with an axle load of 25 tonnes; creation of multifunctional structures; increasing the structural strength of long-base flat cars; application of the latest assembly and welding technologies. The following main vectors for improving the design of cars have been identified based on the results of a analysis of scientific and applied research, in addition to the above: the use of new materials; development of six-axle articulated wagons with an axle load of 23.5 tonnes and 25 tonnes; development of railcars using new generation bogies and components; achieving a uniform load on the supporting structure; design of flat cars for transporting containers in two tiers; development of new cars for intermodal, interoperable and combined transport.

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Investigation of Coupling Strength at Non-Central Interaction of Railcars

Cited by 2 publications

References 18 publications

Determination of the form of loss the freight cars stability taking into account the gap in the rail track

Determination of the form of loss the freight cars stability taking into account the gap in the rail track

Ways of improving of freight car design

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