Prediction method and experimental verification of vibration response caused by underground high-speed railways

Li, Hao; Yang, Weiguo; Liu, Pei; Wang, Meng

doi:10.1177/14613484221132117

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…Equations included in the system Eq. ( 1) are written in different coordinate systems: the first three -in the base mobile, the last three -in their own, associated with the body [11]. Based on the systems of equations ( 1) written for all bodies of the mechanical system, a system of second-order ordinary differential equations is determined that describes the motion of the system in generalized coordinates, with nonlinear right-hand sides (in matrix form):…”

Section: Methodsmentioning

confidence: 99%

Modeling the interaction of the rolling stock and the track in the emergency braking mode of a passenger train

Zhauyt,

Solonenko,

Musayev

et al. 2024

Preprint

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The Author analyze the transitional mode of movement of a passenger train caused by sudden braking by the driver. To study the possibility of derailment of passenger cars, a simulation model of the movement of a train consisting of a locomotive and twenty passenger cars was developed in the Universal Mechanism software environment, designed to study the dynamics and kinematics of mechanical systems, which include railway rolling stock. The developed model allows taking into account the longitudinal, transverse and vertical vibrations of all cars and locomotive. All bodies in the model are assumed to be absolutely rigid. The assumption of non-deformability of the bodies is based on the fact that the stiffness of the spring suspension and elastic connections is significantly less than the structural rigidity of the bogie frames and the bolster structure, and the frequency of elastic vibrations of these bodies is much higher than the frequency of their vibrations on the spring suspension. Passengers and cargo in a wagon are considered to be non-deformable and integral with the wagon body, similarly in the case of a locomotive body. Between the elements of the system, connections are involved that regulate certain relative movements of these elements.

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Section: Methodsmentioning

confidence: 99%

Modeling the interaction of the rolling stock and the track in the emergency braking mode of a passenger train

Zhauyt,

Solonenko,

Musayev

et al. 2024

Preprint

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show abstract

“…29 of grade 1/11 on rails R65 located at the Belle station. The direction when the locomotive CKD6E-2108 moved forward with the first wheel pair from the station towards the entrance switches was taken as the direct course of the diesel locomotive [14]. Figure 3 shows the oscillograms of the primary measurements of dynamic processes recorded at turnouts.…”

Section: Dynamic Performance Of a Diesel Locomotive On Turnoutsmentioning

confidence: 99%

Theory and Practice of Determining the Dynamic Performance of Traction Rolling Stock

Musayev,

Zhauyt,

Ismagulova

et al. 2023

Applied Sciences

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In the interaction of the rolling stock and the upper structure of the railway track, intense dynamic loads occur. They have a destructive effect both on the parts of the rolling stock and on the elements of the superstructure of the track. In order to develop a durable, rational and reliably functioning design of cars and locomotives with good dynamic properties and good indicators of the impact of rolling stock on the railway track, along with theoretical computational studies, experimental studies are also required, which are usually the final stage in the design and implementation of rolling stock or the modernization of existing ones, such as locomotives and wagons, in order to improve their strength and dynamic performance. This article presents the results of field tests to determine the dynamic performance of the type CKD6e diesel locomotive. The description of the preparation of the CKD6e shunting locomotive for testing is given. An analysis of the dynamic performance of a diesel locomotive during the passage of turnouts, on a straight section of the track and in a curve with a radius of 400 m, was carried out. The studies performed showed that the minimum value of the stability factor against wheel derailment on a straight section of the track is significantly higher than the standard value. The experimentally obtained ratio of frame forces to the static load from the wheelset on the rails, the coefficients of vertical dynamics of the first and the second stages of suspension and the coefficient of stability against derailment of the wheel from the rail were registered on the track section in a curve with a radius of 400 m meet the current requirements. A calculation scheme and equations of vertical oscillations are proposed, an analysis is carried out according to the graphs of movements of bogies and a locomotive body when moving along irregularities of different lengths at different speeds.

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“…Figure 1 shows the following elements: Р1, Р3 -frame forces of the 1 st and 3 rd wheelset (transverse movements between the bogie frame and the wheelset); TB1L, TB1R, TB3L, TB3R -vertical movements between the bogie frame and the axle box of the 1 st and 3 rd When marking the location of the installation of sensors on the bogie of the locomotive, the places most prone to deformation during the movement of the locomotive are taken into account. The locations of the sensors were chosen empirically [10]. The sensor installation sites are pre-cleaned with special equipment to a flat and smooth surface, and then the place is processed with sandpaper across the sensor installation to a slight roughness [11].…”

Section: Preparing the Ckd6e Shunting Locomotive For Testingmentioning

confidence: 99%

“…The equations of bogie oscillations Equations ( 6) and ( 7) on the right side contain expressions describing the side of the track [10].…”

Section: Drawing Up Equations Of Vertical Oscillations Of a Diesel Lo...mentioning

confidence: 99%

Theory and Practice of Determining the Dynamic Performance of Traction Rolling Stock

Musayev,

Zhauyt,

Ismagulov

et al. 2023

Preprint

View full text Add to dashboard Cite

In the interaction of the rolling stock and the upper structure of the railway track, intense dynamic loads occur. They have a destructive effect both on the parts of the rolling stock and on the elements of the superstructure of the track. In order to develop a durable, rational and reliably functioning design of cars and locomotives with good dynamic properties and good indicators of the impact of rolling stock on the railway track, along with theoretical computational studies, experimental studies are also required, which are usually the final stage in the design and implementation of rolling stock or modernization of existing ones. Locomotives and wagons in order to improve their strength and dynamic performance. The article presents the results of field tests to determine the dynamic performance of the type CKD6e diesel locomotive. The description of the preparation of the CKD6e shunting locomotive for testing is given. An analysis of the dynamic performance of a diesel locomotive during the passage of turnouts, on a straight section of the track and in a curve with a radius of 400 m, was carried out. The studies performed showed that the minimum value of the stability factor against wheel derailment on a straight section of the track is significantly higher than the standard value. The experimentally obtained ratio of frame forces to the static load from the wheelset on the rails, the coefficients of vertical dynamics of the first and second stages of suspension and the coefficient of stability against derailment of the wheel from the rail, registered on the track section in a curve with a radius of 400 m) meet the current requirements. A calculation scheme and equations of vertical oscillations are proposed, an analysis is carried out according to the graphs of movements of bogies and a locomotive body when moving along irregularities of different lengths at different speeds.

show abstract

Prediction method and experimental verification of vibration response caused by underground high-speed railways

Cited by 5 publications

References 25 publications

Modeling the interaction of the rolling stock and the track in the emergency braking mode of a passenger train

Modeling the interaction of the rolling stock and the track in the emergency braking mode of a passenger train

Theory and Practice of Determining the Dynamic Performance of Traction Rolling Stock

Theory and Practice of Determining the Dynamic Performance of Traction Rolling Stock

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