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This slide is from the paper, "Optimum design of stiffened panels with substiffeners" by David Bushnell and Charles Rankin, AIAA 46th Structures, Structural Dynamics, and Materials Conference, Paper no. AIAA-2005-1932, 2005, referred to as "2005 substiff paper" in some other slides.
PANDA2 accounts for many different kinds of buckling of a given stiffened plate or shell.
This slide lists several phrases used in the definitions of design margins computed by PANDA2.
Additional margin phrases are listed in other slides in this slide show, in particular, margins pertaining to buckling of skin-ring single module models, margins pertaining to various failure modes possible in shells with sandwich wall construction, and stress margins.
In this slide the string, "SAND", means "Sanders shell equations" and the string, "FS" means "factor of safety".
Phrases for general buckling were inadvertantly not included on this slide. PANDA2 finds general buckling loads from various models.
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