具有半圆形梁的手性多孔结构的力学性能

Mechanical Properties of a Chiral Cellular Structure with Semicircular Beams.

作者信息

Bai Yalei, Zhao Tong, Yuan Chengxu, Liu Weidong, Zhang Haichao, Yang Lei, She Chongmin

机构信息

College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China.

出版信息

Materials (Basel). 2021 May 27;14(11):2887. doi: 10.3390/ma14112887.

DOI:10.3390/ma14112887

PMID:34072228

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8198671/

Abstract

Compliant cellular structures are good candidates for morphing applications. This paper proposes a novel chiral cellular structure composed of circular beams with great elastic properties and potential for morphing. The tensile and shear elastic properties of the structure are studied through theoretical derivations and then verified by finite element analysis. Results show that this novel chiral structure exhibits extremely low in-plane tensile and shear moduli, which are many orders of magnitude lower than that of the raw material. The structure also shows tensile-shear and shear-tensile coupling effects that cannot be ignored. The tensile and shear properties of the structure can provide a reference for employing this structure in engineering applications.

摘要

柔顺的蜂窝结构是变形应用的理想候选材料。本文提出了一种新型手性蜂窝结构，它由具有良好弹性性能和变形潜力的圆形梁组成。通过理论推导研究了该结构的拉伸和剪切弹性性能，然后通过有限元分析进行验证。结果表明，这种新型手性结构的面内拉伸和剪切模量极低，比原材料低多个数量级。该结构还表现出不可忽视的拉剪和剪拉耦合效应。该结构的拉伸和剪切性能可为其在工程应用中的使用提供参考。