A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig
To investigate and understand conditions of mutual contact and collision impact between a wheel-flat and a roller rig, we first did a bench test of a bogie with the wheel flat on the roller rig. In the bench test, the effect of the rotational speed of the wheel and the sprung mass on the vertical ac...
| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2018-08-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/84/865/84_18-00198/_pdf/-char/en |
| _version_ | 1797988987588050944 |
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| author | Yasutaka MAKI Yoshiaki TERUMICHI |
| author_facet | Yasutaka MAKI Yoshiaki TERUMICHI |
| author_sort | Yasutaka MAKI |
| collection | DOAJ |
| description | To investigate and understand conditions of mutual contact and collision impact between a wheel-flat and a roller rig, we first did a bench test of a bogie with the wheel flat on the roller rig. In the bench test, the effect of the rotational speed of the wheel and the sprung mass on the vertical acceleration of an axlebox was observed. Based on the results of the bench test, we built a dynamic simulation model of the bogie composed of the rigid bodies. By comparing the vertical accelerations of the axlebox calculated by the model with those by the bench test, we could verify that the calculation results of the simulation model provided good agreement with the experimental ones. The model calculation made clear that the wheel rotated contacting the roller rig continuously up to the speed of 10 km/h, and at higher speed had a short period during which the wheel did not contact with the roller rig at the beginning of the flat. When there were any contactless periods, the maximum value of the vertical contact force occurred at the moment of the collision impact just after the contactless state. Particularly at 25 km/h, the impact spot was located around the area from the center to the end of the wheel-flat, and it was revealed by the result of the simulation that differences in the potential energy stored in a compressed axle spring result in differences in the collision velocity of the wheel to the roller rig in a higher speed range than 25 km/h according to the load on the bogie. |
| first_indexed | 2024-04-11T08:13:06Z |
| format | Article |
| id | doaj.art-d8aae76f331c49af9ca7d26548accb24 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:13:06Z |
| publishDate | 2018-08-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-d8aae76f331c49af9ca7d26548accb242022-12-22T04:35:16ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612018-08-018486518-0019818-0019810.1299/transjsme.18-00198transjsmeA study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rigYasutaka MAKI0Yoshiaki TERUMICHI1Railway Technical Research InstituteDepartment of Mechanical Engineering, Sophia UniversityTo investigate and understand conditions of mutual contact and collision impact between a wheel-flat and a roller rig, we first did a bench test of a bogie with the wheel flat on the roller rig. In the bench test, the effect of the rotational speed of the wheel and the sprung mass on the vertical acceleration of an axlebox was observed. Based on the results of the bench test, we built a dynamic simulation model of the bogie composed of the rigid bodies. By comparing the vertical accelerations of the axlebox calculated by the model with those by the bench test, we could verify that the calculation results of the simulation model provided good agreement with the experimental ones. The model calculation made clear that the wheel rotated contacting the roller rig continuously up to the speed of 10 km/h, and at higher speed had a short period during which the wheel did not contact with the roller rig at the beginning of the flat. When there were any contactless periods, the maximum value of the vertical contact force occurred at the moment of the collision impact just after the contactless state. Particularly at 25 km/h, the impact spot was located around the area from the center to the end of the wheel-flat, and it was revealed by the result of the simulation that differences in the potential energy stored in a compressed axle spring result in differences in the collision velocity of the wheel to the roller rig in a higher speed range than 25 km/h according to the load on the bogie.https://www.jstage.jst.go.jp/article/transjsme/84/865/84_18-00198/_pdf/-char/enwheel-flatcollison behaviourcontact forcecontact conditionroller rigbench testcritical speeddynamic simulation model |
| spellingShingle | Yasutaka MAKI Yoshiaki TERUMICHI A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig Nihon Kikai Gakkai ronbunshu wheel-flat collison behaviour contact force contact condition roller rig bench test critical speed dynamic simulation model |
| title | A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| title_full | A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| title_fullStr | A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| title_full_unstemmed | A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| title_short | A study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| title_sort | study on the contact condition and the collision behaviour of a wheelset with a flat set on a roller rig |
| topic | wheel-flat collison behaviour contact force contact condition roller rig bench test critical speed dynamic simulation model |
| url | https://www.jstage.jst.go.jp/article/transjsme/84/865/84_18-00198/_pdf/-char/en |
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