3D-Printed Nonuniform Lattice Metamaterials with Programmable Poisson's Ratio

Jingyi Zhang*, Yuheng Liu*, Haibao Lu*, Ran Tao

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

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.

源语言英语
文章编号2550001
期刊International Journal of Applied Mechanics
DOI
出版状态已接受/待刊 - 2025

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引用此

Zhang, J., Liu, Y., Lu, H., & Tao, R. (已接受/印刷中). 3D-Printed Nonuniform Lattice Metamaterials with Programmable Poisson's Ratio. International Journal of Applied Mechanics, 文章 2550001. https://doi.org/10.1142/S1758825125500012