Berthe, J.

Bouvet, C.

Chaibi, S.

Congourdeau, F.

Laurin, F.

Rannou, J.

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8th ECCOMAS Thematic Conference on the Mechanical Response of Composites: COMPOSITES 2021M. Fagerström & G. Catalanotti (Editors)PREDICTION OF DAMAGES INDUCED BY A LOW-VELOCITYIMPACT ON LAST GENERATION COMPOSITE LAMINATESSalim Chaibi1∗, Christophe Bouvet2, Frédéric Laurin1, Johann Rannou1, Julien Berthe1,Fabrice Congourdeau31 DMAS, ONERA, Université Paris Saclay F-92322 Châtillon - France2 MSC ICA Université de Toulouse INSA – ISAE-SUPAERO – Mines Albi – UPS, Toulouse, France3 Stress Dpt, Dassault Aviation, Saint-Cloud, France∗ salim.chaibi@onera.frThis work is dealing with an experimental and numerical study of the behavior and strength ofa carbon/epoxy toughened composite material subjected to low-velocity impact [1]. A specificexperimental device has been developped to monitor the evaluation of damage mechanisms dur-ing a low-velocity impact, using advanced instrumentation technologies (such as IR thermogra-phy and digital image correlation associated with superfast cameras) (Figure 1). Additionally,3D nondestructive evaluation methods (X-ray tomography, ultrasonic scans) are considered inorder to assess and understand the damage mechanisms in such a material. The tests have beensimulated using a 3D FEM with contacts, a continuum damage model for the intra-ply damage(fiber failure and matrix damage) [2] and delamination modeling using cohesive elements. Theimpact problem is solved using an implicit solver while taking into account several sources ofnonlinearities (geometrical, material and contacts). Experimental and numerical comparisonswill be presented and discussed in order to evaluate the predictive capabilities of the proposedapproach.IR cameracouponimpactorIR cameracouponOptical cameras(a) side view (b) rear viewFigure 1. Impact experimental set-upReferences[1] S. Rivallant, C. Bouvet et N. Hongkarnjanakul, Failure analysis of CFRP laminates sub-jected to compression after impact : FE simulation using discrete interface elements, Com-posites Part A : Applied Science and Manufacturing, 55, pp. 83–93 (2013).[2] J. Germain, Évaluation des capacités prédictives d’un modèle avancé pour la prévision dela tenue de plaques stratifiées perforées, Doctoral thesis of the university of Paris-Saclay(2020).

Prediction of Damages Induced by a Low-Velocity Impact on Last Generation Composite Laminates

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Prediction of Damages Induced by a Low-Velocity Impact on Last Generation Composite Laminates

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