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Topology morphing in lattice structures through tensile buckling
Date
2023
Abstract
Incorporating, by design, tensile buckling into the macroscopic response of lattice structures offers a novel approach for adaptive (meta-)material/structure development. In this study, we explore the potential of utilizing the simultaneous tensile buckling of adjacent cells to induce a transformation in lattice topology. Unit cells are passively transformed from rectangle-like to triangle/pentagon-like unit cells, with an associated change in the effective macroscopic properties. This approach provides a new route to elastically tailor the non-linear response of (meta-) materials/structures. The paper explores the behavior of such a system through finite element analysis. The results identify: i) that the initial lattice internal topology (rectangular) is dominated by membrane effects, ii) a negative region of stiffness is associated with the transformation phase, and iii) once formed, the new topology (triangular/pentagonal) exhibits positive stiffness in both compression and tension.
Supervisor
Description
Publisher
ASME
Citation
Proceedings of the ASME 2023 Aerospace Structures, Structural Dynamics, and Materials Conference. ASME 2023 Aerospace Structures, Structural Dynamics, and Materials Conference. San Diego, California, USA. June 19–21, 2023
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Funding code
Funding Information
Sustainable Development Goals
External Link
Type
Meetings and Proceedings
Rights
https://creativecommons.org/licenses/by-nc-sa/4.0/