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Communication Dans Un Congrès Année : 2015

Dynamic stress prediction in catenary wires for fatigue analysis

Résumé

Fatigue cracks in the contact wire are a possible cause of fracture which can induce huge costs. Fatigue study is thus of a great interest but requires an accurate computations of stress distributions. OSCAR is a SNCF software used to study coupled pantograph / catenary dynamics. It is based on Euler-Bernoulli beam meshes. This formalism is accurate to study the catenary displacements, but is not sufficient to compute multi-axial stresses, in particular in parts that can concentrate stresses such as the junction claws. This paper details and illustrates the strategy developed to compute a full multi-axial transient stress field, in any point of the contact wire. The dynamic displacement computed by OSCAR is expanded and combined with a precise nonlinear static state of a mixed model of beams and volume elements.
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Dates et versions

hal-01333446 , version 1 (17-06-2016)

Identifiants

  • HAL Id : hal-01333446 , version 1
  • ENSAM : http://hdl.handle.net/10985/10919

Citer

Jean-Philippe Bianchi, Etienne Balmès, Mac Lan Nguyen-Tajan. Dynamic stress prediction in catenary wires for fatigue analysis. IAVSD 2015, Aug 2015, Graz, Austria. pp.1-10. ⟨hal-01333446⟩
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