Volume 13, Issue 14 (Second Special Issue 2014)                   Modares Mechanical Engineering 2014, 13(14): 15-27 | Back to browse issues page

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ashenai_ghasemi F, pourkamali A, roozbahani A. Using XFEM for investigating the crack growth of cracked aluminum plates repaired with fiber metal laminate (FML) patches. Modares Mechanical Engineering 2014; 13 (14) :15-27
URL: http://mme.modares.ac.ir/article-15-10231-en.html
Abstract:   (8195 Views)
Extended finite element method (XFEM) is one of the strongest numerical methods that its basis is finite element but regardless of mesh location respect to discountinuty solves the problems. In this method, using of enreaching the nodes and increasing of their degrees of freedom (from 2 to 4 or even upto 10) virtually and without verifying the mesh and geometry of discountinuty, one can model and develop the required governing equations of the system. In this paper, fatigue crack growth of repaired aluminum panels containing a crack is studied. The cracked panels were repaired on one side with glass/epoxy composite patches in the mixed mode condition. The extended finite element method is used to study the effects of patch lay-up configuration on crack front displacement and stress intensity factor and the effect of crack angle on stress intensity factor of the repaired panels. The results show that the plate-fiber-fiber-aluminum configuration has best effect and it could reduce the stress intensity factor (k1) by upto seventy percent.
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Article Type: Research Article | Subject: Creep, Fatigue & Failure|Finite Elements Method|Composites
Received: 2013/07/9 | Accepted: 2013/07/30 | Published: 2014/02/20

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