SOLUTION OF DIFFERENTIAL EQUATIONS OF WAGON OVERSPREAD MASSES OSCILLATION
DOI:
https://doi.org/10.52167/2790-5829-2022-2-2-8-13Keywords:
galloping, lateral swing, vertical oscillations, bouncing, speedAbstract
The paper gives the methodology of differential equations solution for description of bouncing, galloping and side swaying oscillations of railcar with asymmetrically located cargoes of different masses which were carried out on computer. Continuous vertical irregularities in the rail track and level difference (track skewness) of two rail tracks in the vertical transverse plane were taken as disturbances, spectral density of which is shown, respectively. To obtain the spectral densities depending on the speed, the abscissa of the spectral densities plots were multiplied by the speed, and the ordinates were divided by the speed at which the oscillations of the loaded car were investigated at that moment. As a result, spectral densities of unevenness of rail thread and misalignment of two rail threads in vertical transverse plane at speeds of 50; 80; 100 and 120 km/h of four-axle car with tare weight 21 t with bogies type CNIIKhZ were obtained.
References
[1] Akhatov S. T, Solonenko V. G., Makhmetova N. M., Kosenko S. A., Ivanovtseva N. V., Malik A. Application of linear asynchro-nous motors for high-speed ground transport. News of the National Academy of Sciences of the Republic of Kazakhstan, series of geology and technical sciences, 2021, vol. 2, no. 446, pp. 31 - 36, https://doi.org/10.32014/2021.2518-170X. 31
[2] Akhatov S.T., Malik A.A., Joldas B.A. The amplitude-frequency characteristics of acceleration of the suspension of a railway vehicle. International Journal of Advanced Logistics, Transport and Engineering, Vol. 1 No. 1 (2022) pp. 17-22
[3] Solonenko V.G., Makhmetova N.M., Bekzhanova S.E., Bazanova I.A., Nikolayev V.A., Kvashnin M.Ya., Malik A.A. Modeling the influence of the article device on dynamic indicators of freight wagons. News of the national academy of sciences of the republic of Kazakhstan. Series of geology and technical sciences. ISSN 2224-5278. Volume 5, Number 443 (2020), Pages 181 - 187.
[4] Vladimir Solonenko, Narzankul Makhmetova, Janat Musayev, Mikhail Kuashnin, Algazy Zhauyt. Modeling of dynamic characteristics of freight car withoptimized parameters of wedge-type shock absorber. Journal of Vibroengineering, Vol. 19, Issue 2, p. 1197-1213, 2017, (Thomson Reuters, IF=0.398, quartile=Q4, SCOPUS, IF=0.22, quartile=Q3), DOI: 10.21595/jve.2017.16901, EID: 2-s2.0-85020402498.
[5] Vladimir Solonenko, Narzankul Makhmetova, Janat Musayev, Mikhail Kvashnin. Some aspects of the experimental assessment of dynamic behavior of the railway track. Journal of theoretical and applied mechanics, Vol. 55, no. 2, p. 421-432, 2017, (Thomson Reuters, IF=0.771, quartile=Q4, SCOPUS, IF=0.34, quartile=Q3), DOI: 10.15632/jtam-pl.55.2.421, EID: 2-s2.0-85019569243.