A Pyramidal Lattice Frame: Pathways to Inversion

TitleA Pyramidal Lattice Frame: Pathways to Inversion
Publication TypeJournal Article
Year of Publication2021
AuthorsY Guan, and LN Virgin
JournalInternational Journal of Structural Stability and Dynamics
Volume21
Issue2
Date Published02/2021
Abstract

This paper considers the load-deflection behavior of a pyramid-like, shallow lattice structure. It consists of four beams that join at a central apex and when subject to a lateral load, it exhibits a propensity to snap-through: A classical buckling phenomenon. Whether this structural inversion occurs, and the routes by which it happens, depends sensitively on geometry. Given the often sudden nature of the instability, the behavior is also examined within a dynamics context. The outcome of numerical simulations are favorably compared with experimental data extracted from the testing of three-dimensional (3D)-printed specimens. The key contributions of this paper are that despite the continuous nature of the physical system, its behavior (transient and equilibria) can be adequately described using a discrete model, and the paper also illustrates the utility of 3D-printing in an accessible research context.

DOI10.1142/S0219455421500206
Short TitleInternational Journal of Structural Stability and Dynamics