Topology optimization of patch in unsymmetric bonded repair of cracked metal sheets
Bonded repair of cracks by gluing patches in metal structures has been widely used due to high strength and speed, and easiness. Obviously, the efficiency of this repair is affected by the shape of the patch. In this research, the shape of the patch with constant thickness is optimized in the unsymmetric bonded repair of an aluminum plate with a central crack, under uniaxial tension perpendicular to the crack. For this purpose, a topology optimization algorithm based on the strain energy density homogenization has been used. The two-dimensional three-layer finite element model of Naboulsi and Maal has been used to model and analyze the repair system. The results show that the optimal shape efficiency of this algorithm in reducing the strain energy released at the crack tip per unit of crack extension is affected by the dimensions of the design initial geometric space relative to the crack length and its volume relative to the patch material volume. It is a efficiency criterion of repair. Therefore, with the appropriate selection of the initial space, the optimal shape of this algorithm is desirable both from the point of view of the repair efficiency criterion and from the point of view of construction.
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
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