| Autor: |
Kuzyshyn, A., Sobolevska, J., Kostritsa, S., Batig, A., Boiarko, V. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2684 Issue 1, p1-7, 7p |
| Abstrakt: |
The authors of the article used a thermodynamic model of an air spring with an additional reservoir to simulate the second stage of spring suspension of high-speed rolling stock. In this model, the pressure in the air spring was determined by the differential form of the ideal gas equation of state. Since the air spring is connected to an additional reservoir by means of a pipeline, the equation took into account the change in air mass due to its overflow. When determining the mass flow rate, the flow was considered turbulent, which provided for finding the appropriate Reynolds number and head losses, which consisted of three components: friction, compression and expansion losses. The law of conservation of energy was considered taking into account the heat transfer between the air spring and the environment, as well as the transfer of energy between the air spring and the auxiliary reservoir. Using a simplified mechanical model of high-speed rolling stock, the dependence of the force with which the air springs acts on the elements of the rolling stock on its deformation was obtained, and energy dissipation when changing the parameters of the connecting element was investigated. Using of the selected thermodynamic model of the air spring in the spatial model of high-speed rolling stock will further allow assessing its dynamic performance when interacting with the railway track, traffic safety indicators and choosing the optimal parameters of the rolling stock and railway track at the design stage. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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