Influence of boundary conditions on the collapse behaviour of stiffened panels under combined loads |
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| Institution: | 1. School of Mechanical and Aerospace, Queen''s University Belfast, United Kingdom;2. Department of Industrial Engineering, University of Salerno, Italy;3. Center for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;4. Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, United Kingdom;5. Institute for Innovation in Sustainable Engineering, University of Derby, England, United Kingdom |
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| Abstract: | A series of finite element analyses are conducted to investigate the influence of boundary conditions and geometry of the model on the predicted collapse behaviour of stiffened panels. Periodic and symmetric boundary conditions in the longitudinal direction are used to calculate the ultimate strength of stiffened panels under combined biaxial thrust and lateral pressure. The calculated ultimate strength of stiffened panels are compared with those by different FEM (finite element method) code and are assessed. The periodic boundary condition in the longitudinal direction for two spans or bays model provides an appropriate modelling to a continuous stiffened panel and can consider both odd and even number of half waves and thus, is considered to introduce the smaller model uncertainty for the analysis of a continuous stiffened panel. |
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| Keywords: | Ultimate strength Stiffened panel Biaxial load Buckling Collapse |
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