Print Email Facebook Twitter Analysis and validation of a scaled, launch-vehicle-like composite cylinder under axial compression Title Analysis and validation of a scaled, launch-vehicle-like composite cylinder under axial compression Author Rudd, M.T. (TU Delft Aerospace Structures & Computational Mechanics; NASA Marshall Space Flight Center) Eberlein, David J. (Student TU Delft) Waters, W. Allen (Analytical Mechanics Associates, Inc.) Gardner, Nathaniel W. (NASA Langley Research Center) Schultz, Marc R. (NASA Langley Research Center) Bisagni, C. (TU Delft Aerospace Structures & Computational Mechanics) Date 2023 Abstract Launch vehicle structures, such as payload adapters and interstages, are increasingly designed and constructed using composite materials due to their high stiffness- and strength-to-weight ratios. Therefore, it is important to develop a validated finite element modeling methodology for designing and analyzing composite launch-vehicle shell structures. This can be achieved, in part, by correlating high-fidelity numerical models with test data. Buckling is often an important failure mode for cylindrical shells, and the buckling response of such structures is also often quite sensitive to imperfections in geometry and loading. Hence, it is crucial to understand the model parameters and details required to accurately predict the buckling load and behavior of composite cylindrical shells, especially if the shell is buckling critical. The inclusion of as-built features, such as radial imperfections, thickness variations, and loading imperfections can help improve the correlation between test and analysis. To demonstrate such an approach, a validated modeling methodology that was used to predict the buckling behavior of a scaled component for a launch-vehicle-like structure is presented, and results from the model are compared with experimental results. The modeling approach presented herein was used to successfully predict the buckling behavior. Subject Buckling propagationComposite cylindrical shellMeasured imperfectionTestUnconventional layup To reference this document use: http://resolver.tudelft.nl/uuid:68c5fc91-e00b-43e0-96e6-f7bc9e9a8e99 DOI https://doi.org/10.1016/j.compstruct.2022.116393 ISSN 0263-8223 Source Composite Structures, 304 Part of collection Institutional Repository Document type journal article Rights © 2023 M.T. Rudd, David J. Eberlein, W. Allen Waters, Nathaniel W. Gardner, Marc R. Schultz, C. Bisagni Files PDF 1_s2.0_S0263822322011254_main.pdf 12.63 MB Close viewer /islandora/object/uuid:68c5fc91-e00b-43e0-96e6-f7bc9e9a8e99/datastream/OBJ/view