Design margins of the optimized, externally T-ring and T-stringer stiffened cylindrical shell under combined loads, Nx, Ny, Nxy, p

This is Table 15 in the 2006 difficult paper. This slide lists design margins for the optimized design listed in the previous slide. The shell was optimized as imperfect and the margins listed here are for that same design with the amplitude of the imperfection set equal to zero.

Compare these margins with those listed in the next slide for the same shell with the general buckling modal imperfection present.

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