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Thermomechanical design in the automotive industry

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2004
auteur(s) Thomas Jean-Jacques; Verger Laetitia; Bignonnet André; Charkaluk Eric
journal (abréviation) Fatigue & Fracture of Engineering Materials & Structures (Fatigue Fact Engng Mater Struct)
volume (numéro) 27 (10)
pages 887 – 895
résumé In this paper thermomechanical fatigue assessment in the automotive industry is discussed. The design strategy is based upon a consistent approach of the thermomechanical loading, the mechanical constitutive law of the material, the damage parameters and the fatigue strength criteria. The good understanding of these different steps allows one to perform predictive calculations of automotive parts subjected to thermomechanical loading. The main hypotheses and modelling choices are presented and results are illustrated by a series of computations on real 3D structures. Cracked area and lifetime prediction are described in the case of aluminium alloy cylinder heads subjected to transient thermal loadings.
mots clés automotive;constitutive model;engine;fatigue;thermomechanical;viscoplastic
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