Advances in Materials Research
Volume 4, Number 2, 2015, pages 087-96
DOI: 10.12989/amr.2015.4.2.087
Elastic-plastic analysis of the J integral for repaired cracks in plates
Mokadem Salem, Belabbes Bachir Bouiadjra, Belaïd Mechab and Khacem Kaddouri: LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89 Cité Ben M
Abstract
In this paper, three-dimensional finite element method is used to analyze the J integral for repaired cracks in plates with bonded composite patch and stiffeners. For elastic the effect of cracks, the thickness of the patch (er) and properties of the patch are presented for calculating the J integral. For elastic-plastic a several calculations have been realized to extract the plasticized elements around the crack tip of repaired and un-repaired crack. The obtained results show that the presence of the composite patch and stiffener reduces considerably the size of the plastic zone ahead of the crack. The effects of crack size and the inter-distance of repaired cracks were analysed.
Key Words
composite; finite element method; crack; J integral; fracture mechanic; elastic-plastic
Address
Mokadem Salem, Belabbes Bachir Bouiadjra, Belaïd Mechab
and Khacem Kaddouri: LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89 Cite Ben M\'hidi 22000, Sidi Bel Abbes, Algeria