Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/79691
Título: | Railway dynamics with curved contact patch |
Autor(es): | Marques, Filipe Magalhães, Hugo Pombo, João Ambrósio, Jorge Flores, Paulo |
Palavras-chave: | Railway dynamics Contact forces Conformal contact Non-Hertzian |
Data: | Out-2022 |
Editora: | Springer |
Revista: | Mechanisms and Machine Science |
Resumo(s): | The wheel-rail contact modeling is of paramount importance for the dynamics of railway vehicles since it represents the interaction between the vehicle and the track. Although, in most cases, the contact generated occurs between convex surfaces which results in planar contact areas, the contact might take place in concave surfaces when negotiation sharp curves or due to the wear of profiles. In that cases, the resulting contact area is not planar. This work proposes a methodology to determine the shape of the contact patch in a curved surface, where the normal direction varies along its lateral direction. This method is based on a semi-Hertzian approach and discretizes the contact into longitudinal strips. The normal pressure distribution is computed in each strip separately using a non-Hertzian contact model and it is summed in a vector form to obtain the total normal force magnitude. Regarding the tangential forces, a look up table approach is considered. Finally, a trailer vehicle negotiating a curve is used to demonstrate the effectiveness of this methodology. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/79691 |
ISBN: | 978-3-030-88750-6 |
DOI: | 10.1007/978-3-030-88751-3_11 |
ISSN: | 2211-0984 |
Versão da editora: | https://link.springer.com/chapter/10.1007/978-3-030-88751-3_11 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CMEMS - Artigos em livros de atas/Papers in proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Paper_MuSMe.pdf | 309,35 kB | Adobe PDF | Ver/Abrir |