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A platform for research: civil engineering, architecture and urbanism
Buckling properties of bulged barrels under external pressure
Abstract This study evaluated the buckling properties of externally pressurised bulged barrels and the bulging performance of internally pressurised cylindrical preforms. Barrels were fabricated from stainless-steel cylindrical preforms through the integral hydro-bulge forming technique. The cylindrical preforms had a thickness-to-radius ratio of 0.0176 and height-to-radius ratio of 1.961. Bulging and buckling were numerically evaluated under several bulging magnitudes. In addition, nonlinear numerical evaluations are well-benchmarked against the experimental data of six tested samples. The results indicate that this forming technique can be extended to fabricate atypical externally pressurised vessels, such as barrelled pressure hulls. In addition, the external pressure-supporting capacity of the bulged vessels was substantially enhanced under material hardening and curvature increasing.
Highlights Buckling properties of externally pressurised bulged barrels were evaluated. Barrels were fabricated from cylinders via the integral hydro-bulge forming. Numerical evaluations are well-benchmarked against the experiments. External loading capacity of the bulged vessels was substantially enhanced.
Buckling properties of bulged barrels under external pressure
Abstract This study evaluated the buckling properties of externally pressurised bulged barrels and the bulging performance of internally pressurised cylindrical preforms. Barrels were fabricated from stainless-steel cylindrical preforms through the integral hydro-bulge forming technique. The cylindrical preforms had a thickness-to-radius ratio of 0.0176 and height-to-radius ratio of 1.961. Bulging and buckling were numerically evaluated under several bulging magnitudes. In addition, nonlinear numerical evaluations are well-benchmarked against the experimental data of six tested samples. The results indicate that this forming technique can be extended to fabricate atypical externally pressurised vessels, such as barrelled pressure hulls. In addition, the external pressure-supporting capacity of the bulged vessels was substantially enhanced under material hardening and curvature increasing.
Highlights Buckling properties of externally pressurised bulged barrels were evaluated. Barrels were fabricated from cylinders via the integral hydro-bulge forming. Numerical evaluations are well-benchmarked against the experiments. External loading capacity of the bulged vessels was substantially enhanced.
Buckling properties of bulged barrels under external pressure
Zhang, Jian (author) / Wang, Feng (author) / Wang, Fang (author) / Zhao, Xilu (author) / Tang, Wenxian (author) / Chen, Fengluo (author)
Thin-Walled Structures ; 168
2021-07-22
Article (Journal)
Electronic Resource
English
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