TY - JOUR
T1 - 3D-Printed Nonuniform Lattice Metamaterials with Programmable Poisson's Ratio
AU - Zhang, Jingyi
AU - Liu, Yuheng
AU - Lu, Haibao
AU - Tao, Ran
N1 - Publisher Copyright:
© 2025 World Scientific Publishing Europe Ltd.
PY - 2025
Y1 - 2025
N2 - This research presents a novel design method for mechanical metamaterials with programmable Poisson's ratio. Poisson's ratio of metamaterials can be quantitatively controlled by geometric parameters such as the side length of the rhombus, rhombus angle, and reentrant angle. The parametric study was conducted through finite element method (FEM) analysis, revealing the influence of geometric parameters on Poisson's ratio and nominal modulus. The FEM results have a good agreement with the experiments. Additionally, based on the design concept of nonuniform stiffness, we have designed different structural parameters for different areas to achieve multiple Poisson's ratio effects within the same structure. Ultimately, two types of nonuniform stiffness metamaterials, featuring distinct three Poisson's ratios and asymmetrical Poisson's ratios were obtained, respectively. This work expands the design methods in the research of programmable Poisson's ratio metamaterials and provides guidance for the design of nonuniform stiffness lattice structures with tunable Poisson's ratio.
AB - This research presents a novel design method for mechanical metamaterials with programmable Poisson's ratio. Poisson's ratio of metamaterials can be quantitatively controlled by geometric parameters such as the side length of the rhombus, rhombus angle, and reentrant angle. The parametric study was conducted through finite element method (FEM) analysis, revealing the influence of geometric parameters on Poisson's ratio and nominal modulus. The FEM results have a good agreement with the experiments. Additionally, based on the design concept of nonuniform stiffness, we have designed different structural parameters for different areas to achieve multiple Poisson's ratio effects within the same structure. Ultimately, two types of nonuniform stiffness metamaterials, featuring distinct three Poisson's ratios and asymmetrical Poisson's ratios were obtained, respectively. This work expands the design methods in the research of programmable Poisson's ratio metamaterials and provides guidance for the design of nonuniform stiffness lattice structures with tunable Poisson's ratio.
KW - 3D printing
KW - nonuniform stiffness
KW - Tunable Poisson's ratio
UR - http://www.scopus.com/inward/record.url?scp=85214902428&partnerID=8YFLogxK
U2 - 10.1142/S1758825125500012
DO - 10.1142/S1758825125500012
M3 - Article
AN - SCOPUS:85214902428
SN - 1758-8251
JO - International Journal of Applied Mechanics
JF - International Journal of Applied Mechanics
M1 - 2550001
ER -