Freight car models and their computer-aided dynamic analysis

Kovalev, Roman; Lysikov, Nikolay; Mikheev, Gennady; Pogorelov, Dmitry; Simonov, Vitaly; Yazykov, Vladislav; Zakharov, S. M.; Zharov, I. A.; Goryacheva, I. G.; Soshenkov, Sergey; Torskaya, E. V.

doi:10.1007/s11044-009-9170-6

Cited by 54 publications

(13 citation statements)

References 15 publications

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“…It is purposeful to estimate cars' dynamic performance applying imitative simulation technologies; this approach ensures determination of the dynamic performance through the entire spectrum of operation conditions [18,20,27]. When solving the task of the study by computer simulation fl at car of 13-7024 model having 71.2 t capacity and 22.8 t weight was taken as prototype of a car used for containerized transportation.…”

Section: Objects and Methods Of The Studymentioning

confidence: 99%

“…Ratio of guiding force to vertical force aff ecting the wheel Y/Q was taken as criterion of stability against derailment of rolling stock for 1435 mm tracks [18,20,28]. Th is ratio is known as Nadal criterion (M.J. Nadal).…”

Section: Calculation Valuesmentioning

confidence: 99%

“…Safety of railway vehicles as key problem includes a number of components [5] leading position among which belongs to issues related to motion dynamics of the vehicles related to stability of rolling stock against derailment [6,14,18,22]. Dynamic performance of the vehicles' stability on the track depends upon the level of force interaction of wheels and rails signifi cant introduction to which is due to lateral oscillations of the railway vehicle [4,7,16,17,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Estimation of Stability of Railway Flat Cars with Various Types of Running Gear Against Derailment

Domin¹,

Domin²,

Cherniak³

2019

Problemy Kolejnictwa - Railway Reports

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Issue related to ensuring safety of technical operation of fl at cars for high speed containerized transportation by way of using new types of running gear is considered in the paper. Because of principal drawbacks of widely used bogies of freight cars possible use of axle box suspension bogies is considered for the equipment of high speed fl at cars. Taking into consideration highly effi cient application of mathematic simulation for the determination of dynamic performance of railway cars appropriate computer models were developed for the estimation of the conditions related to ensuring safe motion of fl at cars. It was revealed as result of the simulation that in case of stability of wheelsets against derailment condition of safe operation of a fl at car equipped with axle box suspension bogies is satisfi ed at travel speeds up to and including 150 km/h whereas safe travel of a fl at car equipped with conventional bogies is ensured at travel speeds up to but 100 km/h. Th is conclusion gives bases to recommend equipment of fl at cars for high speed containerized transportation with axle box suspension running gear.

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Section: Objects and Methods Of The Studymentioning

confidence: 99%

Section: Calculation Valuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimation of Stability of Railway Flat Cars with Various Types of Running Gear Against Derailment

Domin¹,

Domin²,

Cherniak³

2019

Problemy Kolejnictwa - Railway Reports

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“…Numbers in brackets correspond to degrees of freedom for the models. [5]. The main feature of the model consists in use of more than one hundred compliant frictional contacts between the bodies.…”

Section: Pogorelov a Rodikov R Kovalevmentioning

confidence: 99%

Parallel Computations and Co-Simulation in Universal Mechanism Software. Part Ii: Examples

2019

Self Cite

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The second part of the paper continues a discussion on the topic of parallel computations in railway dynamics. The algorithms described in the first part of the paper are applied to parallel simulation on computers with multicore processors of six different models of rail vehicles and trains with the number of degrees of freedom from about one hundred to more than 20 thousands. A considerable simulation speedup is reported. In addition, an example of evaluation of wheel profile wear on multicore processors and comparison of different approaches to multi-variant computations are considered.

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“…A large number of papers have been devoted to modeling the motion of railway carriages in which as a rule the theory of «creep» with various refinements of the equations of motion is used [1,2]. In modeling, specialized computer programs of engineering analysis are used [3][4][5][6][7]. In a number of works, the dynamic interactions of the «wheel-rail» system are considered taking into account deviations in the content of the running parts of the vehicles and the track [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modeling of railway vehicles movement having deviations in content of running parts

Петров¹,

Tarmaev²

2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

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The need for an accurate mathematical description of the dynamic processes occurring in the running parts of the railway vehicles is substantiated, taking into account the real operating conditions of the rolling stock. A mathematical model of motion of vehicles with a variable structure of a system of nonlinear differential equations of motion is proposed. In the design scheme, material elements are accepted by massive rigid bodies, whose internal deformations are not taken into account in calculations, and by elastic-friction elements with nonlinear characteristics, whose masses are neglected. Between the elements of the system, connections are used that regulate certain relative movements of these elements. Features of dynamic power connections in the «wheel pair-path» system are taken into account, including rolling, sliding and slipping of wheel crests along the lateral faces of railheads arising in motion. To do this, a special technique is used to calculate the longitudinal and transverse forces of wheel-rail friction depending on the redistribution of the relative rates of slippage, lateral attitude, wagging and twitching of the wheel pair. The mathematical model allows one to investigate the movement, dynamic properties of the railway vehicles taking into account the real combinations of the maximum permissible wear of the running parts of the vehicles and the track; choose rational parameters of the railway vehicles for various geometric, rigid and inertial parameters of the running gear of the vehicle.

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Freight car models and their computer-aided dynamic analysis

Cited by 54 publications

References 15 publications

Estimation of Stability of Railway Flat Cars with Various Types of Running Gear Against Derailment

Estimation of Stability of Railway Flat Cars with Various Types of Running Gear Against Derailment

Parallel Computations and Co-Simulation in Universal Mechanism Software. Part Ii: Examples

Modeling of railway vehicles movement having deviations in content of running parts

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