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- W2782246110 abstract "Results from the buckling test of a compression-loaded 8-ft-diameter seamless (i.e., without manufacturing joints), orthogrid-stiffened metallic cylinder are presented. This test was used to assess the buckling response and imperfection sensitivity characteristics of a seamless cylinder. In addition, the test article and test served as a technology demonstration to show the application of the flow forming manufacturing process to build more efficient buckling-critical structures by eliminating the welded joints that are traditionally used in the manufacturing of large metallic barrels. Pretest predictions of the cylinder buckling response were obtained using a finite-element model that included measured geometric imperfections. The buckling load predicted using this model was 697,000 lb, and the test article buckled at 743,000 lb (6% higher). After the test, the model was revised to account for measured variations in skin and stiffener geometry, nonuniform loading, and material properties. The revised model predicted a buckling load of 754,000 lb, which is within 1.5% of the tested buckling load. In addition, it was determined that the load carrying capability of the seamless cylinder is approximately 28% greater than a corresponding cylinder with welded joints." @default.
- W2782246110 created "2018-01-12" @default.
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- W2782246110 date "2018-01-07" @default.
- W2782246110 modified "2023-10-18" @default.
- W2782246110 title "Buckling Response of a Large-Scale, Seamless, Orthogrid- Stiffened Metallic Cylinder" @default.
- W2782246110 cites W2073568624 @default.
- W2782246110 doi "https://doi.org/10.2514/6.2018-1987" @default.
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