BUCKLING OF IMPERFECT ANISOTROPIC CIRCULAR-CYLINDERS UNDER COMBINED LOADING

This study consisted of a theoretical and experimental investigation of the buckling of circular cylindrical shells under the simultaneous action of torsion, external pressure, and axial compression. Laminated anisotropic behavior was considered, as was the effect of small axisymmetric shape imperfections. The theoretical analysis took into account the exact form of the boundary conditions and nonlinear prebuckling deformations. Interactive stability surfaces were computed for a variety of laminate configurations together with approximate formulas for buckling under these three loading conditions. Comparisons with experimental data obtained from buckling tests on glass/epoxy cylinders were also made. © 1979 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.