Wheel flat effect on wheel-rail dynamic interaction

Spiroiu, Marius Adrian; Crăciun, Camil

doi:10.1088/1757-899x/444/4/042002

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Bian et al 22 established a three-dimensional, wheel-rail, rolling contact, finite element model and revealed that the wheel-rail impact load increases monotonically with the length of the flat scar. Abnormal loads caused by OOR wheels with flat scars or polygons will increase the wheel-rail contact force [20][21][22][23][24][25][26][27][28][29][30][31] and accelerate the initiation and propagation of cracks, potentially leading to wheel rim failures that are substantially below the design life of the wheel. Wu et al 32 studied remaining life of axle with initial crack in the presence of wheel polygonalization using a comprehensive coupled vehicle/ track dynamic model.…”

Section: Introductionmentioning

confidence: 99%

Influence of wheel out‐of‐roundness on the remaining life of railway wheels under mixed‐mode fatigue loading

Yan

Wang

Guo

et al. 2022

Fatigue Fract Eng Mat Struct

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As a common condition in train operation, the out-of-roundness (OOR) of wheels may have a great influence on the life of cracked wheels. In this study, the I-II mixed-mode crack growth rate of different angles was tested, finite element analysis was carried out by using the test results, and the influence of different wheel roundness conditions on the life of cracked wheels was revealed. The results show that the mode II stress intensity factor of mixed-mode cracks is the main driving force for crack propagation in the process of wheel rim crack growth. With an increase in the wheel scar length and the order of the wheel polygon, the crack propagation life decreases significantly.

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Section: Introductionmentioning

confidence: 99%

Influence of wheel out‐of‐roundness on the remaining life of railway wheels under mixed‐mode fatigue loading

Yan

Wang

Guo

et al. 2022

Fatigue Fract Eng Mat Struct

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“…The displacement of centers of mass at each time step in system solution of differential equations is the result of the simulation, which makes it possible to obtain forces, stresses, and other necessary motion parameters. Such an approach describes the dynamic processes of rolling stock with adequacy sufficient for almost the entire list of relevant modern tasks [1,2,3,4,5,6], etc. Certain difficulties arise when introducing a railway track into such models.…”

Section: Introductionmentioning

confidence: 99%

Research of the Reduced Mass of the Railway Track

Kurhan

Leibuk

2020

Acta Tech. Jaurinensis

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In an overall view, a vehicle is described as a system of bodies interconnected by elastic and dissipative couplings. Bodies have a mass concentrated at a point, the movement of which describes their motion. Certain difficulties arise when introducing a railway track into such models. While interacting with the rolling stock, the track operates as an elastic body, and its mass is specified as reduced to the point of interaction. The purpose of this work is to provide a reasonable value of the reduced mass of the railway track depending on its parameters. The task is solved by applying a spatial model of dynamic deformations of the railway track on the basis of the elasticity theory. Such an approach makes it possible to determine which part of the railway track interacts with the wheel based on the propagation of deformations as elastic waves.

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Dynamic Sustainable Processes Simulation to Study Transport Object Efficiency

Bondarenko¹,

Severino

Olayode

et al. 2022

Infrastructures

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The development of reliability theory has led to the setting of tasks requiring consideration of the efficiency and functional safety of technical objects of transport over the life cycle. The paper demonstrates the possibility of using the universal laws of elastic wave theory to describe natural phenomena occurring in complex dynamic systems, on the examples of solving issues arising in the interaction of rolling stock and the railway track. The accounting of the time component and the ability of elastic waves to propagate energy in time and space allowed considering any interaction process as a chain of processes, incidence-reflection-refraction of force impulses of interaction. Understanding the physics of dynamic processes that occur in objects while performing their intended functions allows developers to improve objects in such a way as to minimize their life cycle cost and maximize their ability to perform their intended functions under different operating conditions. In addition, it allows the expansion of existing methods and approaches to diagnostics of dynamic transport systems. All this is a base for making it possible to develop an innovative and effective tool for engineers and scientists to assess the impact of technosphere transport objects on human habitats.

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Wheel flat effect on wheel-rail dynamic interaction

Cited by 3 publications

References 9 publications

Influence of wheel out‐of‐roundness on the remaining life of railway wheels under mixed‐mode fatigue loading

Influence of wheel out‐of‐roundness on the remaining life of railway wheels under mixed‐mode fatigue loading

Research of the Reduced Mass of the Railway Track

Dynamic Sustainable Processes Simulation to Study Transport Object Efficiency

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