PSI - Issue 36

O. Fomin et al. / Procedia Structural Integrity 36 (2022) 239–246 Oleksij Fomin, Alyona Lovska, Volodymyr Bohomia et al. / Structural Integrity Procedia 00 (2021) 000 – 000

245

Fig. 6. The most loaded zones of the load-bearing structure of a tank wagon

The most loaded areas of the load-bearing structure of a tank wagon are the area of the manhole, as well as the area where the load-bearing structure is mounted on the supports. In the future, it is possible to improve the load bearing structure of a tank wagon taking into account the strengthening of the most loaded areas of the pot. 4 Conclusions The dynamic loading of the load-bearing structure of a tank wagon with malleable links between the pot and the frame was determined by mathematical modelling. The accelerations acting on the pot of a tank wagon were about 2.6 m/s 2 ( ≈ 0.26 g) and do not exceed the permissible values. The dynamic loading of the load-bearing structure of a tank wagon with malleable links between the pot and the frame was determined by computer modelling. The maximum accelerations of the load-bearing structure of a tank wagon occur in the area of the manhole and are 2.8 m/s 2 . The discrepancy between the results of computer and mathematical modelling was about 8%. The coefficient of fatigue strength reserve of the load-bearing structure of a tank wagon was determined. The results of the calculation showed that the coefficient of fatigue resistance equals 2.6 which is 15% higher than permissible. The conducted research will help to reduce the loading of the load-bearing structures of tank wagons during operational modes, extend the life and safety of their operation, reduce maintenance costs, as well as create recommendations for the design of innovative structures. References Atamanchuk, N. A., Tsyganskaya, L. V., 2013. Directions for improving the design of tank cars for transportation of oil products. Transport of the Russian Federation 3 (46), 14 – 17: [In Russian]. DSTU 7598:2014. Freight wagons. General requirements for calculations and design of new and modernized carriages of 1520 mm gauge (non self-propelled): [In Ukrainian]. Dyakonov, V., 2000. MATHCAD 8/2000: a special reference book: [In Russian] Sankt-Petersburg: Peter, 592. Dyomin, Yu. V., Chernyak, G. Yu. 2003. Fundamentals of car dynamics: [In Ukrainian] Kyiv: KUETT, 269. Fomin, O., Gorbunov, M., Lovska, A., Gerlici, J., Kravchenko, K., 2021. Dynamics and strength of circular tube open wagons with aluminum foam filled center sills. Materials 14(8), 1915. https://doi.org/10.3390/ma14081915 Fomin, O., Kulbovskiy, I., Sorochinska, E., Sapronova, S., Bambura, O., 2017. Experimental confirmation of the theory of implementation of the coupled design of center girder of the hopper wagons for iron ore pellets. Eastern - European Journal of Enterprise Technologies 5, 1(89), 11– 19. doi: 10.15587/1729 - 4061.2017.109588 Fomin, O., Lovska, A., 2021. Determination of dynamic loading of bearing structures of freight wagons with actual dimensions. Eastern European Journal of Enterprise Technologies 2/7 (110), 6 – 15. https://doi.org/10.15587/1729-4061.2021.220534 Fomin, O., Lovska, A., 2020. Establishing patterns in determining the dynamics and strength of a covered freight car, which exhausted its resource. Eastern-European Journal of Enterprise Technologies 6, 7 (108), 21 – 29. doi: 10.15587/1729-4061.2020.217162 Goolak, S., Gubarevych, O., Yermolenko, E., Slobodyanyuk, M., Gorobchenko, O., 2020. Mathematical Modeling of an Induction Motor for Vehicles. Eastern - European Journal of Enterprise Technologies 2(2), 25 - 34. https://doi.org/10.15587/1729 - 4061.2020.199559. GOST 33211-2014. Freight cars. Requirements for durability and dynamic qualities: [In Russian]. Jeong, D., Tyrell, D., Carolan, M., Benjamin Perlman, A., 2009. Improved tank car design development: ongoing studies on sandwich structures. Proceedings of ASME Joint Rail Conference JRC. doi: 10.1115/JRC2009-63025