Railroad Wheel
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Aplicação do método de análise de risco ao estudo do descarrilamento. / Aplication of risk analysis method to the derailment study.
This research proposes a risk analysis method applied to derailment event (characterized by the wheel overlap on the rail, which can be caused by many aspects: rail imperfections, rolling stock failures, obstacles etc and which can cause accidents, material and life loss) to increase the safety level on railway transport that actually does not present decrea
Publicado em: 2011
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2. An elastoplastic numerical model of rolling contact applied to analyze the fatigue of railroad wheels / Modelo numerico elastoplastico de contato com rolamento aplicado a analise de fadiga de rodas ferroviarias
This work proposes a wheel-rail contact model based on finite element method to estimate the fatigue life to shelling, until the beginning of the crack of a railroad wheel class C of a heavyhull Brazilian railroad from Serra dos Carajás. The main contribution of this work is the elastoplastic approach with the inclusion of the residual stress generated by t
Publicado em: 2008
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3. Study of the sensitivity of the parameters of sizing of one submitted railway to the vertical deformations / Estudo da sensibilidade dos parametros de dimensionamento de uma via ferrea submetida as deformações verticais
The study of the interaction of the components of the permanent way it is basic for adequate a railroad project, as also it has great importance to create procedures of maintenance of the way based in predictions under a model of adequate performance. For the knowledge of these interactions, for the necessity of a great number of combinations, it is of vital
Publicado em: 2007
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4. Evaluation of subsurface contact stresses in railroad wheels using an elastic half-space model
Railroad wheels fail in two main modes: rolling surface defects like spalling, shelling and wear, and internal defects including cracks propagating after a change takes place in the original stress pattern. Although the effects of the latter are almost always catastrophic, the former is more usual. The onset of rolling surface defects depends on the strength
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-12
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5. Comparação de desempenho dos sistemas de freio de atrito tipo sapatilha-disco e sapata-roda para veiculos ferroviarios de carga
The objective of this work was to obtain and compare the parameters of the railway friction brakes, both shoe-wheel and pad-disk types, verifying the technical possibility of the pad-disc system to be used in replacement to the conventional shoe-wheel system for freight vehicles, maintaining the safe conditions to components integrity. The conditions were ex
Publicado em: 2003
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6. Analise do contato roda-trilho e sua influencia na vida em serviço de rodas ferroviarias
The objective of this work is to analyze the stresses in the wheel-rail contact and to compare them with the contact strength for wheel and rail steels, aiming to estimate the service life for wheels. Those stresses are fundamental to study the shelling in wheels of high load freight railroad cars. The stresses were calculated using Hertz s theory and the Fi
Publicado em: 2000