ONCE AGAIN ON ADDITIONAL POWER LOSSES OF THE TRAIN IN CURVE
Abstract
The article analyzes feasibility of the idea of forming trains of motor cars, put forward by I. K. Aleksandrov in the article «The Train in Curve: Additional Power Losses» (Mir Transporta [World of Transport and Transportation] Journal, 2014, Vol. 12, Iss.1, pp. 18–23). It is noted, in particular, that there is no reason for emergence of secondary forces by changing the direction of the locomotive traction and application of Euler’s formula for evaluating the efficiency of the train as a «transmission mechanism». According to the authors, there is no evidence to suggest the fact that the use of a motor-car train will reduce power losses while moving on a curve because additional resistance to the movement of trains in the curve does not depend on the types of vehicles, butinstead on the radius of the curve and the value of the unextinguished acceleration.
To prove that, the authors analyze interaction of the rolling stock and of superstructure in curves. Basing on the studies the article notes that the bogie with rigid basis finds «natural» standing, whatever position it is, and if wheelsets are rigidly installed within the frame of the bogie, then one of the wheels of a wheelset is slipping, and another one is rolling. In order to evaluate an additional resistance in the curve, the authors suggest to use the notion of «density of slipping of the surface of wheels» rolling and of their rims and they suggest to evaluate power losses caused by additional resistance by using approach based on density of power of forces of slipping friction.
About the Authors
E. P. Korolkov
Moscow State University of Railway Engineering (MIIT), Moscow
Russian Federation
D. Sc. (Eng.), professor at the department of Advanced Mathematics
Russian Federation
D. Sc. (Eng.), professor at the department of Advanced Mathematics
V. N. Koturanov
Moscow State University of Railway Engineering (MIIT), Moscow
Russian Federation
Russian Federation
D. Sc. (Eng.), professor
+7 (495) 6842210
M. P. Kozlov
Moscow State University of Railway Engineering (MIIT), Moscow
Russian Federation
Ph.D. (Eng.), associate professor
Russian Federation
Ph.D. (Eng.), associate professor
References
1. Александров И. К. Движение поезда по кривой: дополнительные энергопотери // Мир транспорта. – 2014. – № 1. – С. 18–23. Aleksandrov, I.K. The Train in Curve: Additional Power Losses. World of Transport and Transportation, 2014, Vol. 12, Iss. 1. pp. 18–23.
2. Вершинский С. В., Данилов В. Н., Хусидов В. Д. Динамика вагона: учебник для вузов / Под ред. С. В. Вершинского. – 3-е изд., перераб. и доп. – М.: Транспорт, 1991. – 360 с. Vershinskiy, S.V., Danilov, V.N., Khusidov, V.D. The dynamics of the car: a textbook for universities [Dinamika vagona: textbook dlja vuzov]. Ed. by Vershinskiy, S.V., 3-d. ed., rev. and enl. Moscow, Transport publ., 1991, 360 p.
3. Панькин Н. А. Причины интенсивного износа гребней колес и рельсов и пути его устранения //Железнодорожный транспорт. – 1991. – № 11. – С. 55–56. Pankin, N.A. Causes of intense wear of wheel flanges and rails and ways to eliminate it [Prichiny intensivnogo iznosa grebnej koles i rel’sov i puti ego ustraneniya]. Zheleznodorozhnyj transport, 1991. Iss. 11, pp. 55–56.
4. Корольков Е. П. Кинематика движения двухосной тележки с жесткой базой в кривом участке пути // Научно-техническая конференция «Неделя науки – 1994». Тезисы. – М.: МИИТ, 1995. – C. 1–10. Korolkov, E.P. The kinematics of a two-axle bogie with a rigid base in a curved section of the track [Kinematika dvizhenija dvuhosnoj telezhki s zhestkoj bazoj v krivom uchastke puti]. Scientific and technical conference «Science Week - 1994». Abstracts. Moscow, MIIT, 1995, pp. 1–10.
5. Конструирование и расчет вагонов: учебник / В. В. Лукин, П. С. Анисимов, В. Н. Котуранов и др.; под ред. П. С. Анисимова. – 2-е изд., перераб. и доп. – М.: Учебно-метод. центр по образованию на ж. д. транспорте, 2011. – 688 с. Lukin, V.V., Anisimov, P.S., Koturanov, V.N. et al.Design and calculation of cars: Textbook [Konstruirovanie i raschet vagonov: uchebnik]. Ed. by Anisimov, P.S. 2nd ed., rev. and enl. Moscow, Learning and teaching centre for education on the railway transport, 2011, 688 p.
6. Корольков Е. П., Голечков Ю. И. Устойчивость установок двухосной тележки при движении экипажа в кривых / //Мир транспорта. – 2006. – № 2. – С. 14–17. Korolkov, E.P., Golechkov, Ju.I. Stability of Devices of Biaxial Truck during the Carriage moving at Curves. World of Transport and Transportation, 2006, Vol. 4, Iss. 2, pp. 14–17.
7. Жуковский Н. Е. Теория прибора инженера Ромейко-Гурко // Собр.соч. – М. – Л.: Госиздат, 1949. – Т. 3. – С. 329–333. Zhukovskiy, N.E. The theory of the instrument of the engineer Romeyko-Gurko [Teoriya pribora inzhenera Romejko-Gurko]. Collection of works. Moscow-Leningrad, Gosizdat publ., 1949, Vol. 3, pp. 329–333.
8. Корольков Е. П., Бондаренко А. И. Условия скольжения колес колесной пары, заключенной в жесткую раму // Международ. научно-техн. конференция «Вычислительная механика деформируемого тела». – М.: МИИТ, 2006. – C. 227–231. Korolkov, E.P., Bondarenko, A.I. Terms of sliding of wheels of a wheel set enclosed in a rigid frame [Uslovija skol’zhenija koles kolesnoj pary, zakljuchennoj v zhestkuju ramu]. International scientific and technical conference «Computational mechanics of deformable bodies», Moscow, MIIT, 2006, pp. 227–231.
9. Корольков Е. П. Снижение износа колес железнодорожного подвижного состава при конструктивных изменениях ходовых частей / Дис… док.техн.наук. – М.: МИИТ, 1997. – 229 с. Korolkov, E.P. Reduction of wear of the wheels of railway rolling stock with design changes of running parts. D. Sc.(Eng.) thesis [Snizhenie iznosa koles zheleznodorozhnogo podvizhnogo sostava pri konstruktivnyh izmenenijah hodovyh chastej. Dis… dok.tehn.nauk]. Moscow, MIIT, 1997, 229 p.
10. Корольков Е. П., Бондаренко А. И. Определение плотности скольжения поверхности катания железнодорожных колес в кривых // Транспорт, наука, техника, управление. – 1991. – № 6. – C. 39–42. Korolkov, E.P., Bondarenko, A.I. Determination of sliding density of wheel tread of railway wheels in curves [Opredelenie plotnosti skol’zhenija poverhnosti katanija zheleznodorozhnyh koles v krivyh]. Transport, nauka, tehnika, upravlenie, 1991, Iss. 6, pp. 39–42.
11. Корольков Е. П., Бондаренко А. И. Удельная мощность сил трения скольжения как фактор износа контактирующих материалов колес и рельсов// Вестник МИИТ. – М.: 2002. – С. 59–62. Korolkov, E.P., Bondarenko, A.I. Specific power of sliding friction forces as a factor of wear of the contacting materials of wheels and rails [Udel’naja moshhnost’ sil trenija skol’zhenija kak faktor iznosa kontaktirujushhih materialov koles i rel’sov]. Proceedings of MIIT, Moscow, 2002, pp. 59–62.
12. Справочник по тяговым расчетам / П. Н. Астахов, П. Т. Гребенюк, А. И. Скворцова. – М.: Транспорт, 1973. – 256 с. Astakhov, P.N., Grebenyuk, P.T., Skvortsova, A.I. Guide to traction calculations [Spravochnik po tjagovym raschetam]. Moscow, Transport publ., 1973, 256 p.
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For citations:
Korolkov E.P., Koturanov V.N., Kozlov M.P. ONCE AGAIN ON ADDITIONAL POWER LOSSES OF THE TRAIN IN CURVE. World of Transport and Transportation. 2015;13(2 (57)):20-26.
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