4D printed zero Poisson's ratio metamaterial with switching function of mechanical and vibration isolation performance

Materials & Design

Yuling Wei¹  Zhishuai Wan¹  Le Han²  Longtao Ji³  Wenxia Hu⁴  Shengxin Zhu⁴  Zeang Zhao⁴  Zhen Li⁴  Xudong Yang⁴  Kai Liu⁴  Zongjie Dai⁴  Pengfei Wang⁴  Ran Tao⁵ 

[1] Corresponding authors.;Beijing Electro-mechanical Engineering Institute, Beijing 100074, China;Department of Mechanics and Engineering Structure, Wuhan University of Technology, Wuhan 430070, China;Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China;Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China;

关键词: 4D printing;    Shape memory behavior;    Metamaterial;    Vibration isolation;   

DOI  :  

来源: DOAJ

【 摘 要 】

The unusual properties of mechanical metamaterials are determined by the configuration of artificial periodic structures. However, the mechanical performance of conventional metamaterials is irreversible and cannot perceive and respond to the changes in the environment. In present study, a zero Poisson's ratio metamaterial with intelligent switching mechanical properties and vibration isolation effect is proposed. Based on a 4D printing method of shape memory polymer, this metamaterial is created that can sense temperature changes and switch mechanical properties. The macroscopic deformation and the morphology change of the metamaterial during compression tests are analyzed using experimental and finite element methods. The irregular buckling distortion of the metamaterial is eliminated by cylindrical design, and controllable and adjustable local deformation and stress-strain curve are achieved based on microstructure gradient design. Subsequently, this work focused on the vibration isolation performance of metamaterials, and found fascinating shock absorption performance. Compared with traditional linear spring, this metamaterial spring can effectively reduce the vibration amplitude of certain frequency bands before reaching the resonance peak, which provides a new realization method for low-frequency vibration isolation design.

【 授权许可】

Unknown