Example 11, Slide 32: BIGBOSOR4 model of a simpler optimized complexly corrugated cylindrical shell with smoothing under uniform axial compression

Fig. 54 from the 2014 GENOPT paper.
Results for the specific case called “narw91updown” with 9 major segments per 50-inch width. (See Table 6 for dimensions, margins, and objective.) This configuration is associated with the smallest weight (92.43 lb, Table 6) plotted in Fig. 46 with solid square data points. (See the data point for “Number of segments spanning 50 inches” = 9.) Top left frame: Optimized profile and the critical anti-symmetric general buckling mode (BEHX32). Buckling load factor=1.4978 (n=6). Top right frame: Optimized profile and the critical symmetric general buckling mode (BEHX2). Buckling load factor=1.4980 (n=1). Bottom left frame: The optimized profile shown in the top two frames is expanded and mapped onto a cylindrical surface. Bottom right frame: Critical buckling mode and load factor (1.5031) of the expanded and cylindrically mapped profile.

Page 173 / 190