Academic Journal
Establishing patterns in determining the dynamics and strength of a covered freight car, which exhausted its resource
| Title: | Establishing patterns in determining the dynamics and strength of a covered freight car, which exhausted its resource |
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| Authors: | Fomin, Oleksij, Lovska, Alyona |
| Source: | Eastern-European Journal of Enterprise Technologies; Том 6, № 7 (108) (2020): Прикладна механіка; 21-29 Eastern-European Journal of Enterprise Technologies; Том 6, № 7 (108) (2020): Прикладная механика; 21-29 Eastern-European Journal of Enterprise Technologies; Том 6, № 7 (108) (2020): Applied mechanics; 21-29 |
| Publisher Information: | Private Company Technology Center, 2020. |
| Publication Year: | 2020 |
| Subject Terms: | ресурс эксплуатации, остаточный ресурс, продление ресурса, техническое состояние, прочность конструкции, напряженное состояние, UDC 629.463.1, 0202 electrical engineering, electronic engineering, information engineering, 0211 other engineering and technologies, operating resource, residual resource, resource prolongation, technical condition, structural strength, strained state, 02 engineering and technology, ресурс експлуатації, залишковий ресурс, подовження русурсу, технічний стан, міцність конструкції, напружений стан, 0210 nano-technology |
| Description: | This paper substantiates prolonging the service life of a covered railroad freight car that has exhausted its rated life of operation. In this case, the actual amount of wear of the bearing structure elements, registered during operation, have been taken into consideration. The reported calculations showed that the design service life of the bearing structure of a covered freight car when taking into consideration the extension of operation, is not less than 2 years. Mathematical modeling was carried out to determine the dynamic load on the bearing structure of a covered freight car. It has been established that the maximum accelerations that act on the bearing structure of a covered freight car are 42 m/s 2 . In order to determine the acceleration distribution fields relative to the bearing structure of a covered freight car, a computer simulation was performed. The calculations showed that the maximum acceleration amounts to 43.2 m/s 2 and is concentrated in the middle part of the girder beam. F-criterion was used to verify the dynamic load models. The maximum equivalent stresses of the bearing structure of a covered freight car were determined taking into consideration the wear of its components. It was found that the maximum equivalent stresses occur in the area of interaction between the girder beam and the rod beam and amount to 344 MPa. In other words, the maximum equivalent stresses do not exceed permissible ones. The basic dynamic indicators for a covered freight car have been calculated. The maximum accelerations that act on the bearing structure of a covered freight car in the center of masses reached about 5 m/s 2 . The acceleration of the body in the regions of resting on bogies was about 6 m/s 2 . The travel of the car is rated «good». This study would contribute to improving the efficiency of the transportation process, as well as the functioning of railroad transport |
| Document Type: | Article |
| File Description: | application/pdf |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2020.217162 |
| Access URL: | http://journals.uran.ua/eejet/article/download/217162/220759 http://journals.uran.ua/eejet/article/download/217162/220759 https://cyberleninka.ru/article/n/establishing-patterns-in-determining-the-dynamics-and-strength-of-a-covered-freight-car-which-exhausted-its-resource/pdf http://journals.uran.ua/eejet/article/view/217162 https://cyberleninka.ru/article/n/establishing-patterns-in-determining-the-dynamics-and-strength-of-a-covered-freight-car-which-exhausted-its-resource http://journals.uran.ua/eejet/article/view/217162 |
| Rights: | CC BY |
| Accession Number: | edsair.doi.dedup.....f00b7bb39a2cf74dafa4bf7cd7f1f575 |
| Database: | OpenAIRE |
| ISSN: | 17294061 17293774 |
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| DOI: | 10.15587/1729-4061.2020.217162 |