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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Highly Extensible Stack-Expanded Lattices
Author(s) Yu Zhe Lye, Chang Quan Lai
On-Site Speaker (Planned) Yu Zhe Lye
Abstract Scope Compressive lattices have dominated the field of lattice metamaterials with their large stresses and maximized strain, yet unable to compress beyond its physical limits. Tensile lattices on the other hand could and have been shown to be able to exceed beyond 100% strain. Yet, many studies in literature remain limited in strain and exhibit early onset of catastrophic failure. To circumvent these limitations, we introduce honeycomb expansion inspired stack-expanded lattices fabricated through a modified sheet lamination technique. Selective bonding between each sheet layer allows lattice expansion through beam bending, forming a 3D structure from an initial compact 2D stack. These unique 2D bending-dominated topology were found to follow power scaling laws for their modulus and strength with density. High extensions can be obtained with only a small number of sheet layers with no supports required, demonstrating the high manufacturing efficiency of the present 3D printing technique.
Proceedings Inclusion? Undecided

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