Aerospace Stiffened Panel Initial Sizing With Novel Skin Sub-Stiffening Features

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    The introduction of skin sub-stiffening features has the potential to modify the local stability and fatigue crack growth performance of stiffened panels. Proposed herein is a method to enable initial static strength sizing of panels with such skin sub-stiffening features. The method uses bespoke skin buckling coefficients, automatically generated by Finite Element analysis and thus limits the modification to the conventional aerospace panel initial sizing process. The approach is demonstrated herein and validated for prismatic sub-stiffening features. Moreover, examination of the generated buckling coefficient data illustrates the influence of skin sub-stiffening on buckling behavior, with static strength increases typically corresponding to a reduction in the number of initial skin longitudinal buckle half-waves.



    Original languageEnglish
    Number of pages23
    JournalInternational Journal of Structural Stability and Dynamics
    Journal publication dateOct 2012
    Issue number5
    Publication statusPublished - Oct 2012

    ID: 857523