Master’s Thesis at the University of Basrah Examines Fracture Mechanics Analysis of Sandwich Structures
A master’s thesis at the College of Engineering, University of Basrah, focused on analyzing the fracture mechanics of sandwich structures with different core geometries under various loading conditions.
The thesis, presented by student Esraa Subeih Talib, aimed to study fracture propagation in sandwich structures, which is considered relatively complex due to their geometric composition, making accurate prediction of crack paths a challenging task.
The thesis consisted of four chapters, in which the student evaluated the fracture behavior of sandwich structures with different core shapes. An equivalent model was developed to simplify the calculation of the stress intensity factor by equating it to that of an equivalent plate under different loading conditions, including tension, shear, and compression.
The study employed the Extended Finite Element Method (XFEM) using the Abaqus software under specific boundary conditions. Additionally, both theoretical and experimental methods were used to determine the equivalent modulus of elasticity for the development of the equivalent model.
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