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Using XFEM technique to predict the damage of unidirectional CFRP composite notched under tensile load

  • Benzaama, A. (Departement de Genie Maritime, Universite des Sciences et de la Technologie d'Oran USTOMB) ;
  • Mokhtari, M. (Laboratoire de Recherche en Technologie de Fabrication Mecanique, Ecole Nationale Polytechnique) ;
  • Benzaama, H. (Laboratory of applied Biomechanics and Biomaterials, Ecole Nationale Polytechnique) ;
  • Gouasmi, S. (Laboratoire de Mecanique de Structure et des Solides (LMSS), University of Sidi Bel Abbes) ;
  • Tamine, T. (Departement de Genie Maritime, Universite des Sciences et de la Technologie d'Oran USTOMB)
  • Received : 2017.04.30
  • Accepted : 2017.09.15
  • Published : 2018.01.25
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Abstract

The composite materials are widely used in aircraft structures. Their relative rigidity/weight gives them an important advantage over the metal structures. The objective of this work is to analyze by the finite element method the mechanical behavior of composite plate type notched with various forms under tensile load. Two basic parameters were taken into consideration. The first, the form of the notch in order to see its effect on the stress and the failure load. The second, we studied the influence of the locale orientation of fiber around the plate's notch. These parameters are studied in order to see their effects on the distribution stress and failure load of the plate. The calculation of the failure load is determined numerically with the numerical code ABAQUS using the XFEM (extended Finite Element Modeling) based on the fracture mechanics. The result shows clearly that it is important to optimize the effect of fiber orientation around the notch.

Keywords

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