2016
DOI: 10.1051/mattech/2016018
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Modélisation des mécanismes d’hystérésis des composites tissés à l’aide d’un modèle collaboratif élasto-plastique endommageable à dérivées fractionnaires

Abstract: Ces travaux portent sur la modélisation du comportement des matériaux composites tissus carbone sous chargements cycliques. On propose un modèle collaboratifélasto-plastique endommageable visqueux qui se décompose en deux sous-modèles. Le premier est consacréà caractériser le comportement pendant une phase de chargement. Les déformationsélastiques et inélastiques sont calculées ainsi que les endommagements dans le pliélémentaire. La deuxième partie du modèle est formuléeàp a r t i rd e dérivées fractionnaires … Show more

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Cited by 7 publications
(6 citation statements)
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“…Small errors are observed at the first and the last points of the hysteresis loop. The error at the first point is related to the mathematical particularity of fractional calculus [43]. The error at the last point is related to the uncertainty of the optimal solution.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Small errors are observed at the first and the last points of the hysteresis loop. The error at the first point is related to the mathematical particularity of fractional calculus [43]. The error at the last point is related to the uncertainty of the optimal solution.…”
Section: Resultsmentioning
confidence: 99%
“…where Dx is a step interval, N is a number of interval points and C is the gamma function defined by (2). The Riemann-Liouville fractional integral (4) can be rewritten in the alternative forms [43]:…”
Section: Numerical Evaluation Of Fractional Derivativesmentioning
confidence: 99%
“…For this reason, several authors have developed several numerical modeling methods in order to understand the behavior of these materials. For example, one can describe the overall behavior of the woven composite in a purely phenomenological aspect Ladeveze and LeDantec (1992); Hochard et al (2001); Puck and Schürmann (2002); Hochard et al (2006); Ruijter (2009); Hochard and Thollon (2010); Krasnobrizha (2015); Krasnobrizha et al (2016); Mahboob et al (2017); Praud (2018). Indeed, the effective properties of the material are calculated by modeling the overall structure, considering the material as a homogeneous without the microstructure effect.…”
Section: Introductionmentioning
confidence: 99%
“…So, the elastic and irreversible strains, damage and strain rate effects are taken into account but not material hardening. To fill this gap, a collaborative model is developed [18] which includes the elastoplastic damage behavior law [2] with strain-rate sensitivity [4] and a fractional derivative approach. In this paper the simulation is made by the collaborative model at different strain rates.…”
Section: Introductionmentioning
confidence: 99%
“…To implement the fractional derivative in a numerical code the M1-method [18] is used. The Riemann-Liouville fractional integral of elastic deformation can be expressed in alternative form as:…”
mentioning
confidence: 99%