Calculation of the design life of solid-rolled wheels of railway rolling stock according to the criterion of reliability

Vorobyev, A.A.; Fedorov, I. V.; Chistyakov, E. Yu.; Abduganiyev, T. R.; Glukhov, A. E.

doi:10.20295/1815-588x-2021-1-121-131

PPTU

2021

DOI: 10.20295/1815-588x-2021-1-121-131

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Calculation of the design life of solid-rolled wheels of railway rolling stock according to the criterion of reliability

A.A. Vorobyev¹,

I. V. Fedorov²,

E. Yu. Chistyakov³

et al.

Abstract: Objective: Development of a methodology for determining the design life of solid-rolled wheels of railway rolling stock, based on the requirements of the current regulatory documentation. Methods: Methods of the theories of probability, reliability, elasticity and numerical solution of partial differential equations (ﬁnite element method) are applied. Results: A methodology for calculating the design life using the criteria of TR CU 001/2011, TR CU 002/2011 and GOST 33783–2016. Practical importance: The deve… Show more

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2023

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Procedure for determination of minimum permissible rim thickness of solid-rolled The Method of Determining the Minimum Permissible Rim Thickness of Solid-Rolled Wheels of Freight Cars in Operation

Vorob'ev,

Fedorov,

Konogray

et al. 2023

Bulletin of Scientific Research Results

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Purpose: Determination of the minimum allowable thickness of the rim of solid-rolled wheels of freight cars depending on the design and axial load. Methods: Methods of elasticity theory, methods of numerical solution of partial differential equations (finite element method) are used. Results: The minimum allowable thicknesses of the rims of solid-rolled wheels of freight cars have been determined, as well as the values of fatigue resistance factors for wheels manufactured according to drawing 13.45.1043-01A, 13.45.1011-143, 13.45.1399-207 with a rim thickness of 30 to 16 mm and various axial load. The calculations showed that for the wheels manufactured according to drawing 13.45.1043-01A, 13.45.1399-207, the minimum permissible rim thickness can be reduced to 16 mm. Practical significance: The dependence of the fatigue resistance coefficient on the rim thickness and axial load with an accuracy of up to 15% is obtained, as well as certain minimum permissible thicknesses of the rims of solid-rolled wheels will increase their service life.

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Procedure for determination of minimum permissible rim thickness of solid-rolled The Method of Determining the Minimum Permissible Rim Thickness of Solid-Rolled Wheels of Freight Cars in Operation

Vorob'ev,

Fedorov,

Konogray

et al. 2023

Bulletin of Scientific Research Results

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Analysis of the Relationship between Rail Cant and Track Gauge Based on the Data Obtained by Track Recording Cars

Gallyamov

Ovchinnikov

2023

Mir transp.

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The increase in the service life of track superstructure has always been an important task since this allows reduction in the cost of repairs and current maintenance of the track.The objective of the work is to determine the mutual influence of the rail cant and the track gauge based on the results of measurements carried out by track recording cars, as well as their impact on the stress-strain state of the rail. The analysis was based on statistical and the finite element methods. Using statistical methods, it was determined that the rail cant and track gauge values do not have a normal distribution and have a weak feedback. The reasons were explained in the conclusions.To determine with the finite element method contact stresses in the rail head on the track sections available in the sample, with different combinations of rail cant and track gauge, a model with full geometric similarity was developed.The results obtained from the calculations demonstrate that the deviation of the cant within the range from 1/15 to 1/30 leads to an increase in stresses by more than 20 %, while changing the track gauge has a weak effect on the stress-strain state of the rail head. The maximum increase in contact stresses, at the analysed section, was 97 %, with a cant of 1/990 and a track gauge of 1526 mm.The growth of contact stresses leads to the formation of fatigue cracks and, as a consequence, to the defects and then to replacement of the rail. To increase the service life of the rails, it is recommended to monitor the condition of fasteners and compliance with the technology of current maintenance works, as well as to reconsider tolerance of the deviation of the cant both upward and downward.

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Calculation of the design life of solid-rolled wheels of railway rolling stock according to the criterion of reliability

Cited by 2 publications

References 0 publications

Procedure for determination of minimum permissible rim thickness of solid-rolled The Method of Determining the Minimum Permissible Rim Thickness of Solid-Rolled Wheels of Freight Cars in Operation

Procedure for determination of minimum permissible rim thickness of solid-rolled The Method of Determining the Minimum Permissible Rim Thickness of Solid-Rolled Wheels of Freight Cars in Operation

Analysis of the Relationship between Rail Cant and Track Gauge Based on the Data Obtained by Track Recording Cars

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