Рrediction of changes in wheel profile of railway vehicle due to operational wear
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2015, Vol 4, Issue 4
Abstract
The investigation objective was to develop the technique for predicting railway vehicle wheels wear and changes in their profiles in operation. Methods of mathematical and computer simulation, numerical integration, oscillation theory, statistic dynamics are employed. The paper discusses the technique for predicting wheels wear and changes in their profiles based on the ear-ly developed 3D mathematical model of interactions between the railway vehicle and the track resulting in the determination of the position and sizes of non-elliptic contact spots, including the conform contact, and distribu-tion of normal and tangential forces of interaction using these spots. The developed mathematical software is employed in the analysis of 3D oscillation of the open wagon with comprehensively retrofitted trucks and the ITM-73 wheel profile. Prediction of wheel wear with the flange of the thickness of 31mm and 29 mm (the flange thickness of an unworn wheel is 32 mm) is made. Comparison be-tween predicted and measured profiles of worn wheels is carried out. Predicted and measured profiles agree close-ly. We can make the inference that the technique proposed allows prediction of wheels wear and changes in their profiles in operation at the stage of the design of the rolling stock vehicles and the development of new wheels profiles.
Authors and Affiliations
V. Ushkalov, T. Mokriy, I. Malysheva, N. Bezrukavyi
Keywords
Related Articles
- EP ID EP356459
- DOI -
- Views 74
- Downloads 0
Effects of variations in form of wheel profiles in operation on dynamic qualities of freight cars and indices of their interaction with railway track
The work objective is to study the effects of variations in the form of the wheel profiles in operation on the dynamic qualities of the freight cars and the indices of their interactions with the rail track. The paper pr...
Making and properties of magnetron chrome coating for working surface of titanium actuating hydraulic cylinder
The application of a magnetron technology with ion-plasma assisting is validated for developing a new technology for nanostructurizated chrome coating on the working surfaces of titanium hydraulic cylinders instead of a...
Statement of problem for employing the theory of branching paths to solve problems of search and rescue in emergency zone
The paper purpose is to formulate a scientific problem of the optimization of branching paths to solve the control problems for component drone vehicles designed to operational and rescue units in the emergency area. The...
Assessment of effects of structural rigidity of liquid rocket-engine chamber on characteristics of thrust-vector control
The effects of structural rigidity of the liquid rocket engine chamber with a high-expansion nozzle on the characteristics of the thrust-vector control are assessed. A simplified mathematical model is developed. For the...
On the determination of the tether length for an experimental elec-trodynamic system
The aim of this paper is to analyze the dependence of the tether length of a small experimental electrody-namic space tether system (EDSTS) without additional contactors required for the EDSTS operation in the anode-cath...