L'approche variationnelle de la fatigue : des premiers résultats |
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Authors: | André Jaubert Jean-Jacques Marigo |
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Affiliation: | 1. LPMTM (UPR-CNRS 9001), université Paris-nord, 93430 Villetaneuse, France;2. LMM (UMR 7607 ), université Paris VI, 4, place Jussieu, case 162, 75252 Paris cedex 05, France |
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Abstract: | By using a principle of least energy and a Dugdale surface energy with an irreversibility condition, we build a debonding model of thin films valid both for monotone and cyclic loading. We show that, if the internal length introduced in Dugdale model is small in comparison to the film length, then the growth of the debonding follows Griffith's law under monotone loading and a Paris-type law under cycling loading. To cite this article: A. Jaubert, J.-J. Marigo, C. R. Mecanique 333 (2005). |
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Keywords: | Fatigue Énergie de surface Mécanique de la Rupture Calcul des variations Fatigue Surface energy Fracture Mechanics Calculus of Variations |
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