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Probabilistic elastic-plastic analysis of repaired cracks with bonded composite patch
Mourad Chama,Belaïd Mechab,Khacem Kaddouri,Djelloul Slimani 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.20 No.6
The objective of this work was to evaluate the ductile cracked structures with bonded composite patch used in probabilistic elastic plastic fracture mechanics subjected to tensile load. The finite element method is used to analyze the stress intensity factors for elastic case, the effect of cracks and the thickness of the patch (<i>e<sub>r</sub></i>) are presented for calculating the stress intensity factors. For elastic-plastic the Monte Carlo method is used to predict the distribution function of the mechanical response. According to the obtained results, we note that the stress variations are important factors influencing on the distribution function of (J/Je).
Elastic-plastic analysis of the J integral for repaired cracks in plates
Salem, Mokadem,Bouiadjra, Belabbes Bachir,Mechab, Belaid,Kaddouri, Khacem Techno-Press 2015 Advances in materials research Vol.4 No.2
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 ($e_r$) 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.