| Effect of Longitudinal Forces on the Risks of Empty Car Derailment by L. A. Muginshtein, Yu. S. Romen |
| Abstracts: The effect of longitudinal force values on the risk of car derailment is observed in terms of train movement at speeds near the starting-up level of diverging lateral vibrations. It was found that longitudinal forces starting from 30 t may become dangerous due to loss of empty car stability against wheel mounting on the rail when hunting. |
| Keywords: longitudinal forces; in-train stability of empty cars; mixed train formation |
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| A Model and Methods for Macroeconomic Evaluation of the Mass of Commodities in Transit by B. M. Lapidus, D. A. Macheret |
| Abstracts: The macroeconomic aspect of evaluation of the mass of commodities in transit is observed. A model and methods for such evaluation are proposed with a calculation pattern given to illustrate their use. Ways to improve the macroeconomic effect of transportation are substantiated. |
| Keywords: mass of commodities; macroeconomics; worth; delivery speed; effect |
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| Requirements for Contact Wires in High-speed Railways by I. S. Gershman, N. V. Mironos |
| Abstracts: Technical requirements for contact wires in high-speed railways are observed. These requirements are considered in the context of high-speed railway lines operation. |
| Keywords: high-speed railways; contact wire; technical requirements; mechanical properties; low-temperature creep |
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| Field Measurements’ Data Processing of Longitudinal Forces in Freight Trains Using Polynomial Smoothing Method by I. A. Yabko |
| Abstracts: The paper tackles Savitzky — Golay (SG) filter based polynomial smoothing method as a noise cleaning means of data obtained by field measurements of longitudinal dynamic forces in freight trains. The author gives reasons for preference of SG-filter as related to cleaning field data at a pre-processing stage and obtains analytic expressions enabling definition of optimum filter parameters. |
| Keywords: longitudinal forces; smoothing; numerical filtration |
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| Simulation Technique of Traction Unit Movement in Traction and Braking Modes by V. M. Kondrashov |
| Abstracts: There is represented and illustrated with calculation example in practice simulation technique of self-powered vehicles’ movement in traction and braking modes, allowing to study and evaluate their dynamic properties independent of the number of axles and operating mode of traction drive. |
| Keywords: motive power means; movement simulation; vehicle and traction drive dynamics in traction and braking modes |
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| Potential Satellite Technology Contributions to Railway Operations Management and Safety Promotion by V. A. Gapanovich, V. I. Umansky |
| Abstracts: The paper represents conceptual design of the ST-aided Automated Process Management Systems (ASU-TP) intended for use on railways. There are indicated JSC RZD core activities suitable for ST support and offered modifications of technological basis of different functions due to introduction of ST-provisions. Also rough estimate is offered of the scope of ST provisions applications in the JSC RZD and respective demand of resources. |
| Keywords: satellite technologies; railway operations; railways; digital track models; automated systems |
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| Methods for Defining Fracture Toughness of Full-profile Rails by M. A. Gorbunov |
| Abstracts: Patterns for calculating fracture toughness of full-profile rails bench tested on fatigue and crack resistance are presented in relation to the finite-element model of the defected rail with a transverse edge crack. |
| Keywords: fracture toughness; stress intensity factor; finite-element model |
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| Design and Creation Concept for a Next Generation of Isothermal Rolling Stock by N. K. Averkov, O. A. Voron, S. N. Naumenko |
| Abstracts: With due consideration of modern trends in creation of rolling stock and the transport market development in Russia, a prospective fleet composition is suggested for special-purpose isothermal rolling stock. |
| Keywords: isothermal rolling stock; freight traffic flows; heat transfer factor; undercar generator |
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| Generalized Railway Track Profiles for Traction and Energy Consumption Calculations by N. B. Nikiforova, R. B. Murzin, Ya. B. Kudryavtsev |
| Abstracts: The paper describes the developed methods, algorithms and software package supporting statistical processing and simulation of railway track profiles and represents semi-Markov model algorithms facilitating more detailed experimental data processing on track profiles and their elements’ lengths than possible in terms of traditional representation |
| Keywords: Traction and energy consumption calculations; existing and generalized railway profiles; semi-Markov processes (SMP); statistical analysis and profile simulation |
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| To Energy Consumption Calculations of the Self-powered Locomotive Traction Drive by E. E. Kossov, I. A. Kuznetsova, A. Yu. Epishin |
| Abstracts: Calculation procedure is offered for defining energy consumption related to locomotive operation and train hauling purposes. Grade computations supported opportunities of rational integrating and linking-up diesel locomotive equipment are represented relying upon basic fuel utilization efficiency indicators. |
| Keywords: diesel locomotive; energy; diesel locomotive equipment; cooling; performance coefficient; ambient conditions |
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| The III International Rail Salon EXPO 1520 |
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