employee
Bryansk, Bryansk, Russian Federation
employee
Bryansk, Bryansk, Russian Federation
employee
Bryansk, Bryansk, Russian Federation
employee
Bryansk, Bryansk, Russian Federation
UDK 629.4.021.2 Способы выполнения конструкции подвижного состава
BBK 392 Железнодорожный транспорт
The lining stability of the side walls and roof of the passenger car body is assessed during repair work related to its asymmetric lifting with a jack at one end of the body. Using mathematical modeling, the lifting height is determined which is necessary to ensure the possibility to dismantle the springs of the spring set of the central suspension. The stability of the reinforced lining of the car body was assessed using the developed problem-oriented elastic-dissipative finite element model of the supporting structure of the passenger car body. The calculations are performed in a static non-linear formulation, taking into account the geometric nonlinearity and non-conservativeness of the operating loads. The stability of the reinforced load-bearing lining of the car was assessed both for the initial structure and for a structure with geometric imperfections such as technological loss. The analysis of the research results allows to conclude that during the technological operation associated with lifting the passenger car body with a jack under one support, it can lead to a loss of stability of the sill belt lining of the side wall and the smooth sheathing of the roof slope. The results obtained agree with the results of the inspection of full-scale cars in operation.
car, structure, case, repair loads, stability, lining, finite element method
1. Lee WG, Kim J-S, Sun SJu, Lim J-Y. The next generation material for lightweight railway car body structures: magnesium alloys. Proc IMechE Part F: J Rail and Rapid Transit. 2016;1-18. DOI:https://doi.org/10.1177/0954409716646140
2. Cascino A, Meli E, Rindi A. A strategy for lightweight designing of a railway vehicle car body including composite material and dynamic structural optimization [Internet]. Rail. Eng. Science 31. 2023; 340–350. Available from: https://doi.org/10.1007/s40534-023-00312-6
3. Pogorelov DYu. Algorithms for modeling the dynamics of bodies systems with a large number of degrees of freedom. Vestnik of Lobachevsky University of Nizhni Novgorod. 2011;4(2):278-279.
4. Vysotsky AM, Kobishchanov VV, Anti-pin DYa. Grounds for the method of modeling the double-layer lining of the side walls of passenger car bodies in the analysis of their loading. Bulletin of Bryansk State Technical University. 2013;3:10-13.
5. Vysotsky AM, Kobishchanov VV, Anti-pin DYa, Rasin DYu. The choice of a rational design of a two-layer lining of the side walls of passenger cars. Bulletin of Bryansk State Technical University. 2014;4(44):8-11.
6. Svetlov VI. Technical solutions for the mechanics of passenger cars. Methods of justification. Moscow: Globus; 2002.
7. Carlbom P. Carbody and passengers in rail vehicle dynamics [dissertation]. Stockholm; 2000.
8. Wennberg D. Light-weighting methodology in rail vehicle design through introduction of load carrying sandwich panels: [dissertation]. Stockholm; 2011.
