| Autor: |
Hiroyuki SATO, Tomohiro OKINO |
| Jazyk: |
japonština |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 911, Pp 22-00008-22-00008 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2187-9761 |
| DOI: |
10.1299/transjsme.22-00008 |
| Popis: |
In the event of a collision accident, if a coupler is failed, the distance between railway adjacent vehicles cannot be maintained at a constant space, which may result in a collision between the ends of those railway vehicles. Therefore, it is important to understand the fracture behavior of a coupler in order to study the crashworthiness of a train set. We conducted quasi-static compressive fracture tests to obtain the deformation characteristics and fracture modes for each coupler angle. As a result, it is clarified that there are two fracture modes depending on the coupler angle. In order to understand the dynamic fracture characteristics of a coupler, a Finite Element (FE) model was constructed which validate the quasi-static compressive fracture test. And the fracture characteristics of each coupler angle were estimated when dynamic loads were applied. In addition, by extending the FE model of a coupler to a car body model, a collision analysis model of a train set with elasto-plastic body of the front and end structures was developed. As a basic study, a collision analysis was conducted assuming a level crossing accident. We consider the improvement of the crashworthiness of a train set with not requiring major changes to a car body structure. As a result, we confirm that reinforcing an under support plate and adopting a coupler with energy absorbing element will prevent the fracture of a coupler and increase the crashworthiness of a train set. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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