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The computational modeling of ultimate strength and buckling in stiffened panels under shear loading
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Insinööritieteiden korkeakoulu |
Bachelor's thesis
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ENG3082
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en
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27+6
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Abstract
Stiffened panels are widely utilized in aerospace, marine, and civil engineering due to their exceptional weight-to-strength ratios. These panels are commonly subject to shear loads, which result in buckling and ultimate failure of the struc-ture. Thus, this behavior must be accurately modeled to provide predictions of ultimate and buckling loads for engineers. This thesis analyzes the computation-al methods employed by researchers to determine buckling and ultimate loads of stiffened panels. Additionally, it focuses on the influence of material properties and panel structures on the load-bearing capabilities of stiffened panels. The results from studies indicate that finite element methods are capable of captur-ing complex geometries and non-linear material behavior to provide accurate predictions. These methods produce more accurate predictions than semi-analytical and analytical approaches, but at a higher computational cost. Fur-thermore, the results exhibit the significance of optimizing material properties, structure, and geometry in stiffened panel designs. Finally, machine learning and artificial intelligence introduce innovations that capture the accuracy of fi-nite element methods with higher efficiency.