Linear local buckling from BIGBOSOR4 of the linearly optimized specific case called “mich8”

Fig. 7a Linear local buckling from BIGBOSOR4 of the linearly optimized specific case called “mich8”. The BIGBOSOR4 model used for linear local buckling is that of axial length = 50 inches displayed in Fig. 2c plus a portion of equal axial length and discretization reflected about the plane of symmetry located at the top of the model shown in Fig. 2c. In this particular case there happen to be two critical linear local buckling modes, the one shown here with 70 circumferential waves and the one shown in the next figure with 140 circumferential waves.

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