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Experimental and numerical buckling analysis of toroidal shell segments under uniform external pressure
Abstract This study investigated the buckling performances of stainless steel toroidal shell segments under uniform external pressure. The toroidal shell segments used in this study exhibited a nominal section radius of 70.5 mm, nominal wall thickness of 1.346 mm, and nominal rotation radius of 138 mm. A total of 12 toroidal shell segments were manufactured using roll bending and were measured geometrically, tested hydrostatically, and evaluated numerically. Six of the shell segments had a 45° rotation angle, whereas the other six had a 90° rotation angle. Moreover, the buckling of geometrically perfect toroidal shell segments was explored under various rotation angles ranging from 30° to 360°.
Highlights Twelve steel toroidal shell segments were machined via roll bending of male and female dies. All machined toroidal shell segments were studied experimentally and evaluated numerically. The effects of toroidal shell segment completeness on the buckling were explored numerically. Currently used empiric guidelines yield a very conservative assessment for small angle segments.
Experimental and numerical buckling analysis of toroidal shell segments under uniform external pressure
Abstract This study investigated the buckling performances of stainless steel toroidal shell segments under uniform external pressure. The toroidal shell segments used in this study exhibited a nominal section radius of 70.5 mm, nominal wall thickness of 1.346 mm, and nominal rotation radius of 138 mm. A total of 12 toroidal shell segments were manufactured using roll bending and were measured geometrically, tested hydrostatically, and evaluated numerically. Six of the shell segments had a 45° rotation angle, whereas the other six had a 90° rotation angle. Moreover, the buckling of geometrically perfect toroidal shell segments was explored under various rotation angles ranging from 30° to 360°.
Highlights Twelve steel toroidal shell segments were machined via roll bending of male and female dies. All machined toroidal shell segments were studied experimentally and evaluated numerically. The effects of toroidal shell segment completeness on the buckling were explored numerically. Currently used empiric guidelines yield a very conservative assessment for small angle segments.
Experimental and numerical buckling analysis of toroidal shell segments under uniform external pressure
Zhang, Jian (author) / Wang, Xin (author) / Tang, Wenxian (author) / Wang, Fang (author) / Yin, Baoji (author)
Thin-Walled Structures ; 150
2020-02-17
Article (Journal)
Electronic Resource
English
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