Study on tyre load-bearing characteristics of resilient wheel for rail transit
To address the fatigue failure of wheel tyre in train operation, improve the bearing capacity of tyres and safety of resilient wheel, a systematic study of the load-bearing characteristics and relevant influencing factors of wheel tyre was carried out combined with the structural characteristics and...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2023-03-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2023.02.008 |
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| Summary: | To address the fatigue failure of wheel tyre in train operation, improve the bearing capacity of tyres and safety of resilient wheel, a systematic study of the load-bearing characteristics and relevant influencing factors of wheel tyre was carried out combined with the structural characteristics and bearing mechanism of resilient wheel. In order to accurately analyze the stress characteristics of wheel tyre with elastic support, based on the finite element theory, a parameterized calculation model of wheel tyre load-bearing characteristics with rubber blocks discrete support was established. Then, the stress state distribution, dynamic deformation and stress amplitude of wheel tyre under different structural parameters such as wheel stiffness, wheel tyre thickness and wheel diameter were studied. The results show that the stress distribution on the inner and outer surface of the tyre shows a change trend in the shape of a “W” during operation of the wheels. The inner surface is dominated by tensile stress and the outer surface, by compressive stress. With the increase of tyre thickness and wheel stiffness, the bearing capacity and safety of tyre are improved. However, when the diameter of wheel increases, the bearing capacity of tyre tends to decrease. Therefore, for the resilient wheel with bigger diameter, the wheel stiffness and tyre thickness should be appropriately increased to improve safety. The research methods and results in this paper provide not only a reliable design basis for structural and performance optimization of resilient wheels, but also a strong guidance and reference value for improving the safety and reliability of resilient wheel application. |
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| ISSN: | 1000-128X |