Determination of the Vertical Load on the Carrying Structure of a Flat Wagon with the 18–100 and Y25 Bogies

Abstract

The study deals with determination of the vertical load on the carrying structure of a flat wagon on the 18–100 and Y25 bogies using mathematic modelling. The study was made for an empty wagon passing over a joint irregularity. The authors calculated the carrying structure of a flat wagon with the designed parameters and the actual features recorded during field tests. The mathematical model was solved in MathCad software. The study found that application of the Y25 bogie for a flat wagon with the designed parameters can decrease the dynamic load by 41.1% in comparison to that with the 18–100 bogie. Therefore, application of the Y25 bogie under a flat wagon with the actual parameters allows decreasing the dynamic loading by 41.4% in comparison to that with the 18–100 bogie. The study also looks at the service life of the supporting structure of a flat wagon with the Y25 bogie, which can be more than twice as long as the 18–100 bogie. The research can be of interest for specialists concerned with improvements in the dynamic characteristics and the fatigue strength of freight cars, safe rail operation, freight security, and the results of the research can be used for development of innovative wagon structures.

Calculation of Basic Indicators of Running Safety on the Example of a Freight Wagon with the y25 Bogie

“…Yaw oscillation of the bogie is eliminated by suspended side bearers. The bogie is usually designed for maximal running speed of 100 km/h at the maximal axle load of 22.5 t (or 25 t) or for the maximal running speed of 120 km/h at the maximal axle load of 20 t [7,[18][19].…”

Numerical Modeling in Energy and Environment

“…Other papers were focused on thermal aspects, such as the work of Lebre et al [5], who developed a computational modeling of the thermal behavior of a greenhouse, and Simon et al [6], who focused on radiative transfer in complex environments. Other interesting contributions were those of Fomin et al [7], who determined the vertical load on the carrying structure of a flat wagon with the 18-100 and Y25 bogies; Santos et al [8], who evaluated the thermal performance and energy efficiency of CRAC equipment through mathematical modeling using a new index COP WEUED; Pandey et al [9], who carried out CFD investigations of cyclone separators with different cone heights and shapes; and finally Badiozamani and Beier [10], who estimated the potential differential settlement of a tailing deposit based on consolidation properties heterogeneity.…”

Influence of Passenger Capacity on Fatigue Life of Gearbox Suspender of the Traction Transmission System in Urban Railway Vehicles

“…Li et al [3,4] built a gearbox model to predict the gearbox's state over time and to ensure strength and stiffness. Fomin et al [5,6] studied the vertical load using mathematic modeling, which helped to evaluate vehicles and ensure safety. Liu et al [7,8] studied the problem of difficulties in extracting planetary gearbox fault characteristics.…”