Dynamic Characters of Stiffened Composite Conoidal Shell Roofs with Cutouts: Design Aids and Selection Guidelines

<table>First mode shapes of laminated composite (0/90/0/90) stiffened conoidal shell for different sizes of the central square cutout and boundary conditions.</table>

Journal of Engineering

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Figure 4

Figure 4: Dynamic Characters of Stiffened Composite Conoidal Shell Roofs with Cutouts: Design Aids and Selection Guidelines 