Fractal rigidity of the wheel-rail contact
10.1088/1757-899X/997/1/012002
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/351440
Tipus de documentArticle
Data publicació2020-12-25
EditorInstitute of Physics (IOP)
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
One of the essential parameters of the roughness with effects on the vibration of the wheel and the rail is the contact stiffness. This rigidity considers the geometry and material of the wheel and rail, which are considered elastic. Also, the micro-geometry of the roughness and the load on the wheel, with elastic, elastoplastic and plastic deformations, depending on the deterministic or random character of the roughness were considered. The dependence of the stiffness on the deformation state of the roughness may explain the different amplitude of the vertical vibrations at the same force on the wheel and the same height of the roughness, but one roughness with different fractal parameters. For the analysis of the dynamic forces in contact, the continuous and underived analytical function that modelled the roughness measured experimentally on the rail was applied.
CitacióBabici, L. [et al.]. Fractal rigidity of the wheel-rail contact. "IOP conference series: materials science and engineering", 25 Desembre 2020, vol. 997, p. 012002:1-012002:12.
ISSN1757-899X
Versió de l'editorhttps://iopscience.iop.org/article/10.1088/1757-899X/997/1/012002
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