Structural Engineering and Mechanics

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Energy release rate for kinking crack using mixed finite element

  • Salah, Bouziane (Department of Civil Engineering, University of 20 August 1955 Skikda) ;
  • Hamoudi, Bouzerd (Department of Civil Engineering, University of 20 August 1955 Skikda) ;
  • Noureddine, Boulares (Department of Civil Engineering, University of 20 August 1955 Skikda) ;
  • Mohamed, Guenfoud (Laboratory of Civil Engineering and Hydraulics, University of Guelma)
  • Received : 2013.12.27
  • Accepted : 2014.03.20
  • Published : 2014.06.10
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Abstract

A numerical method, using a special mixed finite element associated with the virtual crack extension technique, has been developed to evaluate the energy release rate for kinking cracks. The element is two dimensional 7-node mixed finite element with 5 displacement nodes and 2 stress nodes. The mixed finite element ensures the continuity of stress and displacement vectors on the coherent part and the free edge effect. This element has been formulated starting from a parent element in a natural plane with the aim to model different types of cracks with various orientations. Example problems with kinking cracks in a homogeneous material and bimaterial are presented to assess the computational accuracies.

Keywords

References

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