Programmable and multistable metamaterials made of precisely tailored bistable cells

• DOI: 10.1016/j.matdes.2023.111810
• Publication Date: 2023-03-06T21:06:38Z
• Authors: Kuan Liang; Yaguang Wang; Yangjun Luo; Akihiro Takezawa; Xiaopeng Zhang; Zhan Kang
• Keywords: Bistability; Multistability

This study proposes a systematic inverse design framework for constructing multistable mechanical metamaterials with programmable gradients. Herein, we designed the tailored bistable cells precisely controlled maximum instability forces through topology optimization approach. Then, structures were programmed to construct different target gradient snapping sequences and deformation models. Consequently, simulation experimental results showed feasibility of method, which successfully produced two- three-dimensional metamaterial functions. Finally, verified expected behaviors by testing specimens prepared via additive manufacturing. Overall, our findings show that proposed strategy offers new paradigm developing metamaterials.