Abstract
A combined analytical and experimental programme on the buckling of cylinders under axial compression, external pressure, and combined loading was conducted to develop a methodology for predicting the buckling of shell structures with manufacturing induced imperfections. A unique method of fabricating test cylinders from Lexan without longitudinal seams was developed. Cylindrical blanks formed by blow moulding were thermoformed and machined to the correct wall thickness to form perfect cylinders. The co-ordinates were measured and the cylinders tested. After testing, the cylinders were thermoformed on a second mandrel containing the desired imperfection shape and amplitude, remeasured, and tested. Excellent correlation to predictions from the BOSOR 4 and ABAQUS computer codes was achieved.
Published Version
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