The work objective is to describe the theoretical and experi-mental research of the vibration attenuation coefficient of the wage wheels on the electric locomotive underframe. Studying the vibro-acoustic characteristics at the workplaces of the locomotive crews shows that the excess of the octave soundpressure levels over the maximum permissible values is largely determined by the noise structural component which is generated by vibrations of the body parts. The vibration velocity calculation is based on the energy methods traditionally used for the energyclosed circuits. The system of equations takes into account not only the geometric parameters of the elements, their physical and mechanical properties, but also the vibration power from the locomotive wheel pairs introduced into the base body under the speed conditions. For the engineering analysis of the vibration spectra of the body parts, and, respectively, of the sound-pressure levels when evaluating the introduced vibration power, it is expedient to use a frequency dependent value of the vibration reduction factor. This is especially important at the machine designing stage. Therefore, the results of the experimental study of the given value and the development of the regressional dependences for various motion speeds on this basis are presented.
vibration, wage wheels, body parts, electric locomo-tive, vibration reduction factor.
Изучению закономерностей формирования спектров вибрации и шума при движении подвижного состава посвящены работы [1–11]. Теоретические и экспериментальные исследования виброакустических характери-стик на рабочих местах локомотивных бригад, приведенных в работах [10, 11], показали, что превышение предельно допустимых значений октавных уровней звукового давления в значительной степени определяется структурной со-ставляющей шума.
1. Dittrich, M. The IMAGINE source model for railway noise prediction. Acta Acustica united with Acustica, 2007, vol. 93, pp. 185-200.
2. Podust, S.F., Pronnikov, Y.V. Spektral´nyy sostav shuma v kabinakh lokomotivov. [Spectral noise composition in the cabs of locomotives.] Tr. mezhdunar. nauch.-prakt. konf. «Transport-2013». [Proc. Int. Sci.-Eng. Conf. “Transport-2013”.] Rostov Institute of Rail Transport Engineering, Rostov on Don, 2013, vol. 2, pp. 215-216 (in Russian).
3. Podust, S.F. Analiz zakonomernostey shumoobrazovaniya elektropoyezdov [Analysis of the laws of electric trains noise.] Vestnik RGUPS, 2012, no. 4, pp. 42-45 (in Russian).
4. Podust, S.F., Kuklin, D.A. Modelirovaniye vibroakusticheskoy dinamiki rel´sa na shpalakh. [Vibroacoustic dynamics simulation of rail on sleepers.] Vestnik of DSTU, 2013, no. 1-2 (70-71), pp. 106-111 (in Russian).
5. Podust, S.F. Modelirovaniye vibroakusticheskoy dinamiki shpal pri dvizhenii podvizhnogo sostava. [Modeling of vi-broacoustic dynamics of sleepers during rolling stock movement.] Vestnik RGUPS, 2013, no. 1, pp. 50-54 (in Russian).
6. Podust, S.F. Eksperimental´nyye issledovaniya shuma i vibratsii gruzovykh poyezdov. [Experimental studies of noise and vibration freight trains.] IX Promyshlennyy kongress yuga Rossii: sb. statey. [Proc. IX Industrial Congress of South Rus-sia.] Rostov-on-Don: DSTU Publ. Centre, 2013, pp. 212-214 (in Russian).
7. Podust, S.F., Pronnikov, Y.V. Eksperimental´nyye issledovaniya dissipativnoy funktsii elementov ostekleniya el-ektrovozov [Experimental studies of dissipation function of locomotive glazing elements.] IX Promyshlennyy kongress yuga Rossii: sb. statey (11-13 sentyabrya 2013, Rostov-na-Donu) [Proc. IX Industrial Congress of South Russia.] Rostov-on-Don: DSTU Publ. Centre, 2013, pp. 215-221 (in Russian).
8. Pronnikov, Y.V. Modelirovaniye strukturnoy sostavlyayushchey shuma v kabinakh mashinistov podvizhnogo sostava. [Modeling of the noise structural component in the driver´s cab of rolling stock.] Vestnik RGUPS, 2010, no. 3, pp. 64-68 (in Russian).
9. Kolesnikov, I.V., Pronnikov, Y.V., Chukarin, A.N. Osnovy akusticheskogo proyektirovaniya kabin mashinistov (teoriya i praktika). [Basics of acoustic designing of driving cabs (theory and practice).] Rostov-on-Don: DSTU Publ. Centre, 2012, 120 p. (in Russian).
10. Podust, S.F., Chukarin, A.N, Boguslavskiy, I.V. Osnovy vibroakusticheskikh raschetov otechestvennykh el-ektrovozov. [Fundamentals of vibro-acoustic calculations of domestic locomotives.] Rostov-on-Don: DSTU Publ. Centre, 2013, 160 p. (in Russian). 11. Kolesnikov, I.V. et al. Sposoby snizheniya shuma i vibratsiy pri proyektirovanii, proizvodstve i ekspluatatsii zheleznodorozhnogo podvizhnogo sostava. [Ways to reduce noise and vibrations in the design, manufacture and operation of rolling stock]. Moscow: VINITI RAN, 2015, 216 p. (in Russian).
11. Kolesnikov, I.V. et al. Sposoby snizheniya shuma i vibratsiy pri proyektirovanii, proizvodstve i ekspluatatsii zheleznodorozhnogo podvizhnogo sostava. [Ways to reduce noise and vibrations in the design, manufacture and operation of rolling stock]. Moscow: VINITI RAN, 2015, 216 p. (in Russian).
12. Kokhanovskiy, V.A., Sergeeva, M.Kh. Planirovaniye eksperimental´nykh issledovaniy. [Planning of experimental research.] Rostov-on-Don: DSTU Publ. Centre, 2014, 256 p. (in Russian).
