Simultaneous buckling, contact, and load-carrying capacity

TitleSimultaneous buckling, contact, and load-carrying capacity
Publication TypeJournal Article
Year of Publication2021
AuthorsL Virgin
JournalJournal of Engineering Mechanics
Volume147
Issue5
Date Published05/2021
Abstract

This paper considers the case of a relatively large number of parallel columns that buckle simultaneously. The close proximity between columns results in the possibility of contact between adjacent columns as buckling proceeds, and this brings with it some interesting observations on load-carrying capacity. Some experimental results verify the theoretical development based on the versatility of high-fidelity 3D printing, but also highlights the difficulty of applying purely axial loading. The sensitive nature of initial geometric imperfections (slight lack of straightness) and load eccentricity strongly influence postbuckled contact, load-carrying capacity, and, as the number of columns is increased, a statistically based evaluation of anticipated behavior is explored and ultimately found to be unrealistic.

DOI10.1061/(ASCE)EM.1943-7889.0001926
Short TitleJournal of Engineering Mechanics