Comparative study on wheel–rail dynamic interactions of side-frame cross-bracing bogie and sub-frame radial bogie

Yang, Chunlei; Fu, Li; Yun-hua, Huang; Wang, Kaiyun; He, Baiqian

doi:10.1007/s40534-013-0001-3

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…The initial conditions for solving the mathematical model are zero [25][26][27][28]. This is justified by the fact that the calculation was carried out with the nominal parameters of the components of the supporting structure of a flatcar.…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

Determining loading patterns in the bearing structure of a railroad flatcar with a floor made from sandwich panels

Lovska

Nerubatskyi

Окороков

et al. 2023

EEJET

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The object of research is the processes of emergence, perception, and redistribution of loads in the supporting structure of a flatcar with a floor made of sandwich panels. To reduce the impact of dynamic loads on the supporting structure of a flatcar, as well as the safety of goods transported in it, it is proposed to manufacture floors from sandwich panels. Within the framework of the study, mathematical modeling of the dynamic load on a flatcar when it runs in a loaded state was carried out. It was found that, taking into account the proposed solution, the accelerations acting on the supporting structure of a flatcar are reduced by 8.4 % compared to the typical one. At the same time, accelerations acting on cargo placed on a flatbed car are reduced by 11.7 %. The results of calculating the strength of sandwich panels, when arranged on a flatcar, proved the feasibility of the proposed improvement. The main indicators of dynamics of the improved flatcar structure operated in an empty state were determined. It was established that the flatcar movement is assessed as "good". A feature of the results reported here is that the improved supporting structure of a flatcar contributes not only to reducing its dynamic load but also to improving the safety of transported cargoes. The scope of practical application of the results is the engineering industry, in particular, railroad transport. The condition for the practical application of the research results is the use of energy-absorbing material in the structure of sandwich panels. The study could contribute to devising recommendations regarding the design of modern structures of railroad vehicles and increasing the efficiency of the functioning of the transportation industry

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Section: The Study Materials and Methodsmentioning

confidence: 99%

Determining loading patterns in the bearing structure of a railroad flatcar with a floor made from sandwich panels

Lovska

Nerubatskyi

Окороков

et al. 2023

EEJET

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“…To determine the dynamic load that acts on the removable module on the platform car, the calculation is carried out. In this case, jumping fluctuations are taken into account as the most common type of oscillations in car operation [16,17]. The estimation scheme of the platform car is shown in Fig.…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

Determining patterns of vertical load on the prototype of a removable module for long-size cargoes

Vatulia

Lovska

Pavliuchenkov

et al. 2022

EEJET

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The object of this study is the processes of occurrence, exposure to, and redistribution of loads in the supporting structure of a removable module for the transportation of long cargoes. To adapt platform cars to the transportation of long loads, it is proposed to introduce a removable module with elastic-friction connections in the structure. In order to select the optimal profiles for the removable module, in terms of minimal material consumption, the calculation was carried out in the Lira software package. Based on the calculation results, a spatial model of the concept of the removable module was built. To determine the dynamic loads that act on the platform car loaded with a removable module, a mathematical simulation was carried out. It was established that the use of elastic-friction links in the structure of the removable module helps reduce its dynamic load, as well as the platform car, by 4.6 %. The resulting acceleration was taken into account when calculating the strength of the removable module. The calculation results showed that the strength of the removable module under operational loads is ensured. A feature of the reported results is that the proposed design of a removable module makes it possible not only to adapt the platform car to the transportation of long loads but also to reduce its load in operation. The scope of practical application of the results includes the engineering industry, in particular, railroad transport. Worth noting is that the conditions for the practical use of the results imply the introduction of elastic-friction links in the structure of the removable module. The reported research will contribute to compiling recommendations for the design of modern vehicle structures, in particular removable type, as well as for improving the efficiency of rail transportation.

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“…A comparative study of the dynamic interaction of wheels with rails when using bogies with lateral frame cross-braces and a radial subframe bogie is carried out in [2]. It was found that the radial bogie of the subframe has the best characteristics of wheel-rail interaction.…”

Section: Fig 1 Y25 Bogie Modelmentioning

confidence: 99%

Study of Loading of the Load-Bearing Structure of Hopper Wagons on Y25 Bogies

et al. 2021

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To increase the efficiency of using railway transport, the possibility of using new designs of bogies, for example, Y25 under "wide gauge" wagons was considered. In order to substantiate the proposed solution, mathematical modeling of the dynamic loading of the hopper wagon Y25 bogies was carried out. A hopper wagon for the transportation of pellets and hot sinter model 20-9749 built by the State Enterprise "Ukrspetsvagon" (Ukraine) was chosen as a prototype. The simulation results showed that the use of Y25 bogies for hopper wagons allows to reduce the acceleration of its load-bearing structure, in comparison with the use of conventional 18100 bogies, by 36 %. Other performance indicators are also significantly improved. The use of Y25 bogies for hopper wagons with actual parameters allows to reduce the acceleration of its load-bearing structure, in comparison with the use of conventional 18100 bogies, by 28 %. The determination of the main indicators of the strength of the bearing structure of the hopper wagon Y25 bogie was carried out. The calculation was carried out in the SolidWorks Simulation software package (CosmosWorks), (France), which implements the finite element method. The calculations showed that the maximum equivalent stresses in the load-bearing structure of a hopper wagon with nominal parameters are 17 % lower than the stress acting in the load-bearing structure of a wagon on bogies 18–100 V of the load-bearing structure of a hopper wagon with actual parameters, the maximum equivalent stresses are 12 % lower per voltage in the load-bearing structure on bogies 18100. The conducted research will help to reduce the load on the load-bearing structures of hopper wagons in operation, improve the dynamics and strength indicators, as well as their service life

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Comparative study on wheel–rail dynamic interactions of side-frame cross-bracing bogie and sub-frame radial bogie

Cited by 8 publications

References 3 publications

Determining loading patterns in the bearing structure of a railroad flatcar with a floor made from sandwich panels

Determining loading patterns in the bearing structure of a railroad flatcar with a floor made from sandwich panels

Determining patterns of vertical load on the prototype of a removable module for long-size cargoes

Study of Loading of the Load-Bearing Structure of Hopper Wagons on Y25 Bogies

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