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    ARTICLE

    Collapse Analysis, Defect Sensitivity and Load Paths in Stiffened Shell Composite Structures

    D.W. Kelly1, M.C.W. Lee1, A.C. Orifici2,3, R.S.Thomson3, R. Degenhardt4,5

    CMC-Computers, Materials & Continua, Vol.10, No.2, pp. 163-194, 2009, DOI:10.3970/cmc.2009.010.163

    Abstract An experimental program for collapse of curved stiffened composite shell structures encountered a wide range of initial and deep buckling mode shapes. This paper presents work to determine the significance of the buckling deformations for determining the final collapse loads and to understand the source of the variation. A finite element analysis is applied to predict growth of damage that causes the disbonding of stiffeners and defines a load displacement curve to final collapse. The variability in material properties and geometry is then investigated to identify a range of buckling modes and development of deep More >

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