力学与实践 ›› 2021, Vol. 43 ›› Issue (1): 164-168.DOI: 10.6052/1000-0879-20-100

• 身边力学的趣话 • 上一篇    下一篇

微纳米点阵力学超材料的设计和性能

张璇1),*, 李晓雁   

  1. *莱布尼茨新材料研究所,德国萨尔布吕肯 66123;
    清华大学工程力学系先进力学与材料中心,北京 100084
  • 收稿日期:2020-03-13 修回日期:2020-08-13 发布日期:2021-02-23
  • 通讯作者: 1)张璇,博士,研究方向为力学超材料和粘附力学。E-mail:xuan.zhang@leibniz-inm.de

DESIGN AND MECHANICAL PROPERTY OF MICRO-/NANO-SCALE ARCHITECTED METAMATERIALS

ZHANG Xuan1),*, LI Xiaoyan   

  1. *Leibniz Institute for New Materials, Saarbrücken 66123, Germany;
    Department of Engineering Mechanics, Center for Advanced Mechanics and Materials, Tsinghua University, Beijing 100084, China
  • Received:2020-03-13 Revised:2020-08-13 Published:2021-02-23

摘要: 在过去几年中,增材制造技术的不断涌现促进了点阵力学超材料研究的迅猛发展。本文主要介绍三维微纳米点阵力学超材料的性能和设计,强调点阵单胞基本单元的演化发展:从桁架到平板再到曲面,如何降低结构内部的应力集中,一步步实现理论预测的各向同性的Hashin--Shtrikman极限刚度。并对这一类力学超材料在生物医药、能源环境等领域的应用进行概述。

关键词: 点阵力学超材料, 超高强度, 各向同性, Hashin--Shtrikman极限刚度

Abstract: In the past years, the prosperous progress of additive manufacturing , promotes a rapid development of the mechanical architected metamaterials. In this paper, the design and the excellent mechanical properties of these metamaterials are introduced, including the following parts: the evolutional development of the unit cell design from beam-based, plated-based to shell-based structures in order to reduce the intrinsic stress concentration; the route to achieve the isotropic Hashin-Shtrikman stiffness limit; their applications in various fields of biological medicine, energy, environment, and others.

Key words: mechanical architected metamaterial, ultrahigh strength, isotropic, Hashin-Shtrikman stiffness limit

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