Analysis and validation of a scaled, launch-vehicle-like composite cylinder under axial compression

Launch vehicle structures, such as payload adapters and interstages, are increasingly designed constructed using composite materials due to their high stiffness- strength-to-weight ratios. Therefore, it is important develop a validated finite element modeling methodology for designing analyzing launch-vehicle shell structures. This can be achieved, in part, by correlating high-fidelity numerical models with test data. Buckling often an failure mode cylindrical shells, the buckling response of structures also quite sensitive imperfections geometry loading. Hence, crucial understand model parameters details required accurately predict load behavior especially if critical. The inclusion as-built features, radial imperfections, thickness variations, loading help improve correlation between analysis. To demonstrate approach, that was used scaled component launch-vehicle-like structure presented, results from compared experimental results. approach presented herein successfully behavior.