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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and numerical investigation on cylindrically curved steel panels under uniform compression
Abstract In this paper, a comprehensive experimental study on cylindrically curved steel panels is presented, in order to characterize the structural behavior of cylindrically curved panels as individual members under uniform compression. Therefore, 32 full-scale compression tests on both stiffened and unstiffened simply supported curved panels were performed, where the radius of curvature and the number of stiffeners were varied. Based on the experimental results a numerical model is built, which was used to investigate the sensitivity to initial geometric imperfections of curved panels. One of the main conclusions is that the behaviour of a panel highly depends on the shape of the initial geometric imperfections, which also determines its ultimate resistance.
Highlights 32 full-scale compression tests were performed on both stiffened and unstiffened simply supported curved panels. Qualitative assessment of the local and global failure modes of curved panels is achieved using DIC system. Imperfection sensitivity of the curved panels is numerically and statistically assessed. Equivalent geometric imperfections from EN 1993-1-5 lead to conservative results in case of highly curved panels. The imperfection shape of the first four buckling modes is not appropriate for the ultimate strength prediction.
Experimental and numerical investigation on cylindrically curved steel panels under uniform compression
Abstract In this paper, a comprehensive experimental study on cylindrically curved steel panels is presented, in order to characterize the structural behavior of cylindrically curved panels as individual members under uniform compression. Therefore, 32 full-scale compression tests on both stiffened and unstiffened simply supported curved panels were performed, where the radius of curvature and the number of stiffeners were varied. Based on the experimental results a numerical model is built, which was used to investigate the sensitivity to initial geometric imperfections of curved panels. One of the main conclusions is that the behaviour of a panel highly depends on the shape of the initial geometric imperfections, which also determines its ultimate resistance.
Highlights 32 full-scale compression tests were performed on both stiffened and unstiffened simply supported curved panels. Qualitative assessment of the local and global failure modes of curved panels is achieved using DIC system. Imperfection sensitivity of the curved panels is numerically and statistically assessed. Equivalent geometric imperfections from EN 1993-1-5 lead to conservative results in case of highly curved panels. The imperfection shape of the first four buckling modes is not appropriate for the ultimate strength prediction.
Experimental and numerical investigation on cylindrically curved steel panels under uniform compression
Ljubinković, Filip (Autor:in) / Martins, João Pedro (Autor:in) / Gervásio, Helena (Autor:in) / da Silva, Luís Simões (Autor:in) / Leitão, Carlos (Autor:in)
Thin-Walled Structures ; 149
22.11.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Imperfection sensitivity of cylindrically curved steel panels
| Elsevier | 2014
Imperfection sensitivity of cylindrically curved steel panels
| Online Contents | 2015
Experimental analysis of unstiffened cylindrically curved panels
| TIBKAT | 2017