Vol. 15, No. 2, 2020

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Using CZM and XFEM to predict the damage to aluminum notched plates reinforced with a composite patch

Mohammed Amine Bellali, Mohamed Mokhtari, Habib Benzaama, Fekirini Hamida, Boualem Serier and Kouider Madani

Vol. 15 (2020), No. 2, 185–201
Abstract

The competition between the propagation of cracks in the plate and the detachment of the patch has been invested in this work. Our goal is to analyze the damage of a notched plate reinforced by a composite patch using FEM. The effect of several parameters of the plate/cohesive/patch structure was evaluated. These parameters concern: firstly, the composite patch such as its stacking sequence; secondly, for the plate we consider the size and shape of the notch; finally, the cohesive area that is conditioned by its resistance to

the mechanism of damage. The effect and competition of these different parameters are evaluated and presented by both load-displacement curves and curves that show the competition between the detachment of the patch and the propagation of the crack in the plate. The calculations are performed with the ABAQUS numerical code using CZM cohesive elements for patch detachment and the XFEM technique for plate fracture. The results obtained illustrate the variation of the damage as a function of these parameters acting simultaneously: the resistance of the interface and the patch under the effect of the notch. Hence these levels of resistance condition the mechanism of damage between the propagation of the crack in the plate and the detachment of the patch.

Keywords
repair technique, CZM (cohesive zone model), XFEM (Xtended finite element method), adhesive type
Milestones
Received: 1 June 2019
Revised: 8 January 2020
Accepted: 29 January 2020
Published: 8 April 2020
Authors
Mohammed Amine Bellali
Mechanical Engineering Department
Djillali Liabes University of Sidi Bel Abbes
22000 Sidi Bel Abbes
Algeria
Mohamed Mokhtari
Mechanical Engineering Department
École Nationale Polytechnique Maurice Audin
RTFM
31000 Oran
Algeria
Habib Benzaama
Mechanical Engineering Department
École Nationale Polytechnique Maurice Audin
LABAB
31000 Oran
Algeria
Fekirini Hamida
Department of Mechanical Engineering
Djillali Liabes University of Sidi Bel Abbes
22000 Sidi Bel Abbes
Algeria
Boualem Serier
Department of Mechanical Engineering
Djillali Liabes University of Sidi Bel Abbes
LMPM
22000 Sidi Bel Abbes
Algeria
Kouider Madani
Department of Mechanical Engineering
Djillali Liabes University of Sidi Bel Abbes
LMPM
22000 Sidi Bel Abbes
Algeria