A kinetic two-scale damage model for high-cycle fatigue simulation using multi-temporal Latin framework
In: European Journal of Mechanics-A/Solids European Journal of Mechanics-A/Solids, Elsevier, 2019, 77, pp.103808. ⟨10.1016/j.euromechsol.2019.103808⟩; (2019-10-01)
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Zugriff:
The goal of this paper is to introduce a model order reduction method for high-cycle fatigue simulations using a kinetic damage model, i.e. a constitutive model in which the damage evolution law is defined as a rate form D ˙ = d d t D for the damage variable D. In the framework of continuum mechanics, high-cycle fatigue simulation involves a two-scale damage model, which includes macroscopic elastic and microscopic plastic behaviours, for a very large number of cycles. Unlike the classical usage of the two-scale damage model by Lemaitre and co-workers, where damage is calculated as a post-process of an elastic or elasto-plastic macroscopic analysis, in this work, a fully coupled analysis is conducted assuming a macroscopic damage feedback from its microscopic counterpart. Damage is considered to be isotropic with micro-defect closure effect on both macroscopic and microscopic scales. To overcome the numerical expense, the large time increment (LATIN) method is used as a linearisation framework, where the constitutive behaviour is separated from the global admissibility which in turn is solved through separation of variables using a proper generalised decomposition (PGD)-based model reduction method. A multi-temporal discretisation approach is henceforth used based on finite element like description in time for the quantities of interest, providing a sophisticated numerical approach suitable for high-cycle fatigue simulation under complex loading.
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A kinetic two-scale damage model for high-cycle fatigue simulation using multi-temporal Latin framework
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Autor/in / Beteiligte Person: | Nackenhorst, Udo ; Fau, Amélie ; Néron, David ; Desmorat, Rodrigue ; Alameddin, Shadi ; Bhattacharyya, Mainak ; Ladevèze, Pierre ; Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS) ; Institut National des Sciences Appliquées de Lyon (INSA Lyon) ; Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) ; Leibniz Universität Hannover [Hannover] (LUH) ; Laboratoire de Mécanique et Technologie (LMT) ; École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS) |
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Quelle: | European Journal of Mechanics-A/Solids European Journal of Mechanics-A/Solids, Elsevier, 2019, 77, pp.103808. ⟨10.1016/j.euromechsol.2019.103808⟩; (2019-10-01) |
Veröffentlichung: | HAL CCSD, 2019 |
Medientyp: | unknown |
ISSN: | 0997-7538 (print) |
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