| Author Name | Affiliation | Postcode | | Ikram Feddal* | Laboratory ICST, National School of Applied Sciences at Tetouan, Abdelmalek Essaâdi University, Tetouan B.P 2222, Morocco | B.P 2222 | | Houcine Zniker | National Higher School of Mining of Rabat, Mohammed V University, Agdal-Rabat B.P 8007, Morocco | | | Hicham Mezouara | Laboratory of Material Physics and Subatomic, Faculty of Sciences | | | Zakia Ngadi | Energy Team Faculty of Sciences of Tetouan, Abdelmalek Essaâdi University, Tétouan B.P 2222, Morocco | | | Mohamed Khalil El Kouifat | National Higher School of Mining of Rabat, Mohammed V University, Agdal-Rabat B.P 8007, Morocco | |
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| Abstract: |
| The impact of material and geometric defects on the buckling failure of stiffened panels is a critical aspect that needs to be carefully analyzed to ensure structural integrity and safety. Stiffened panels are commonly used in various mechanical, aerospace, marine, and civil engineering construction applications. The biggest advantage of the stiffeners is that they increase the panel’s bending stiffness with the least amount of additional material. However, any structural system may reach its limit and buckle under extreme circumstances due to a progressive failure of local components. This study focuses on how material and geometric defects affect the critical buckling load, as well as how stiffness and thickness affect it. We’ve achieved this It does this by using two finite element analyses. The first is a linear analysis that tries to guess the first buckling mode. The second is a nonlinear analysis that uses the results from the first analysis to add localized geometrical flaws using the Riks algorithm in Abaqus CAE. The presence of either material or geometric defects significantly impacts the buckling resistance of the stiffened panel. |
| Key words: FEM buckling friction stir welding (FSW) stiffened panel Abaqus CAE imperfection |
| DOI：10.11916/j.issn.1005-9113.2025002 |
| Clc Number:TB301 |
| Fund: |
