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Structural Engineering and Mechanics Volume 50, Number 5, June10 2014 , pages 665-677 DOI: https://doi.org/10.12989/sem.2014.50.5.665 |
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Energy release rate for kinking crack using mixed finite element |
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Bouziane Salah, Bouzerd Hamoudi, Boulares Noureddine
and Guenfoud Mohamed
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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. | ||
| Key Words | ||
| mixed finite element; kinking crack; energy release rate; virtual crack extension technique; bimaterial | ||
| Address | ||
| Bouziane Salah, Bouzerd Hamoudi, Boulares Noureddine : Department of Civil Engineering, University of 20 August 1955 Skikda, Skikda, Algeria Guenfoud Mohamed : Laboratory of Civil Engineering and Hydraulics, University of Guelma, Guelma, Algeria | ||