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Local–global mode interaction in stringer-stiffened plates |
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| Affiliation: | 1. Faculty of Science, Technology and Enviroment, School of Engineering and Physics, The University of the South Pacific (USP), Suva, Fiji;2. Faculty of Mechanical and Mechatronics Engineering, Shahrood University of Technology, Shahrood, Iran;1. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, PR China;2. Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, United Kingdom |
| Abstract: | A recently developed nonlinear analytical model for axially loaded thin-walled stringer-stiffened plates based on variational principles is extended to include local buckling of the main plate. Interaction between the weakly stable global buckling mode and the strongly stable local buckling mode is highlighted. Highly unstable post-buckling behaviour and a progressively changing wavelength in the local buckling mode profile are observed under increasing compressive deformation. The analytical model is compared against both physical experiments from the literature and finite element analysis conducted in the commercial code Abaqus; excellent agreement is found both in terms of the mechanical response and the predicted deflections. |
| Keywords: | Mode interaction Stiffened plates Cellular buckling Snaking Nonlinear mechanics |
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