Dynamic calculation of a modernized design of a motor carriage subway car with justification of the strength parameters

Due to the widespread failure of subway cars, the Tashkent Metropolitan Company requires the development of a new method for upgrading the frames of multiple unit rolling stock bogies scheduled for major repairs. This method improves dynamic performance and increases strength and reliability (in particular, for subway car bogies). This article presents a dynamic calculation of a modernized design for a multiple unit metro bogie, substantiating its dynamic and strength parameters. Numerical studies were conducted using the MATHCAD 15 programming environment. The calculations performed allow us to identify the bogie components that require reinforcement. The design presented in this article is protected by Patent of the Republic of Uzbekistan for Invention No. IAP 06498 [1].