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| Buckling load factor (eigenvalue), lambda, from the simple closed form PANDA-type model retained as one of the many buckling models included in PANDA2 |
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| The "alternative" double-trigonometric-series-expansion buckling model introduced into PANDA2 in 1999 |
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| (Nx,Nxy) load-interaction curves for a four-layered angle-ply laminated curved plate |
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| A stringer-stiffened panel with three identical modules |
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| Single skin-stringer module of a multi-module stiffened panel |
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| Single skin-stiffener module showing the layer numbering and nodal point numbering conventions used in PANDA2 |
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| Laminated composite skin-T-stringer module |
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| A single discretized skin-T-stiffener module |
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| Local postbuckling of a blade stiffened panel |
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| Another view of the locally post-buckled blade-stiffened panel module shown in the previous slide |
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| Buckling under combined axial compression and in-plane shear of an optimized Z-stiffened cylindrical shell with internal rings and external stringers |
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| Buckling under combined axial compression and in-plane shear of an optimized T-stiffened cylindrical shell with internal rings and external stringers |
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| Nonlinear collapse of the imperfect T-stiffened shell shown in the previous slide |
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| Collapse of a blade stiffened cylindrical shell under combined loads, Nx and Nxy |
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| Buckling of stiffened curved panel with sub-stiffeners under combined loads. This is a small sub-domain model of a complete cylindrical shell. |
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