期刊
STRUCTURES
卷 23, 期 -, 页码 660-664出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.istruc.2019.09.021
关键词
Buckling; Euler buckling; Camber; Eccentricity; Imperfections; 3D printing
资金
- National Science Foundation [NSF-CMMI-1663376]
Imperfections in buckling analyses are often assumed to take the form of either initial member imperfections or load eccentricity, but these effects are typically treated separately. In this paper, these two imperfections are treated simultaneously, focusing on the case in which the two effects neutralize each other. A linear analysis is performed to determine the critical ratio of load eccentricity to member imperfection amplitude at which the column switches its direction of buckling. The results are validated through a series of experimental tests leveraging the capability of 3D-printing to incorporate prescribed geometric imperfections.
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