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Communication Dans Un Congrès Année : 2001

On the simulation of large viscoplastic structures under anisothermal cyclic loadings

Résumé

The optimal design of parts submitted to thermomechanical loadings is a key issue for the safety and quality assessments of structures. In this context, the present paper discusses the choice of a behavior model and the determination of its parameters. For cast iron and aluminum alloy applications, two constitutive laws are compared : one is based on a classical unified viscoplastic model and the other is based on a two-layer plastic-viscous rheological model. The following discussion shows that the use of anisothermal experiments is very important for the identification of material parameters and that simple models can be successfully applied for the predictive lifetime assessments of large 3D structures.
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hal-00116226 , version 1 (26-09-2022)

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Paternité - Pas d'utilisation commerciale

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Laetitia Verger, Andrei Constantinescu, Eric Charkaluk. On the simulation of large viscoplastic structures under anisothermal cyclic loadings. IUTAM Symposium on Creep in Structures, Apr 2000, Nagoya, Japan. pp.341-350, ⟨10.1007/978-94-015-9628-2_33⟩. ⟨hal-00116226⟩
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