Chapters authored
New Approach Measuring the Wheel/Rail Interaction Loads
This chapter suggested new methods for monitoring the dynamic processes of rolling stock/rail interaction. This study develops a new technical solution for measuring the wheel/rail interaction forces on a significant part of the sleeper. The theoretical part of this study, using FEM, confirm the ability of piecewise continuous recording of vertical and lateral forces from the wheel/rail interaction by measuring the stresses in two sections of the rail. Also, the optimum location of strain gauges and the effective length of the measuring zone have been determined. The experimental part of this study has been carried out on the stands and the railway track to confirm the effectiveness of the method to determine the vertical and lateral wheel/rail interaction forces, increase the reliable statistical data, improve the measurement accuracy, reducing the time and cost compared with current testing methods. The developed method is recommended to determine the wheel/rail interaction forces and identify defects on the wheels when diagnosing rolling stock on operational and travel regimes.
Part of the book: Railway Transport Planning and Management
Experimental Research of New Design Solutions for Fencing Refrigerated Wagon Bodies and Containers
In this chapter, in order to select the directions of development and develop scientifically based technical solutions to improve the thermal parameters of the bodies of refrigerated wagons and containers for the transportation of perishable goods in the conditions of the Republic of Uzbekistan, experimental studies of new design solutions for fencing refrigerator bodies and containers have been carried out. For conducting experimental research a method of experimental determination of the body heat transfer coefficient using a closed thermally insulated chamber in the form of a parallelepiped with a replaceable upper face (cover) has been developed. As a result of comprehensive research using analytical calculations and field experiments, it was found that a promising option for thermal body fencing is a technical solution where polyurethane foam and “Corundum” are used as thermal insulation. The use of these technical solutions in the fences of refrigerated wagons bodies and containers will reduce the heat transfer coefficient by up to 20% and, accordingly, reduce the thickness of the fence by 20–30%, which will lead to an increase in the internal useful volume of the body, a decrease in its mass and consumption of materials used, and an improvement in the thermal state of the body.
Part of the book: New Research on Railway Engineering and Transportation