Tensile behaviors of filaments with misfit of chirality

作     者：Yingbin Zhang Huichuan Zhao Hongjun Yu Qinghua Qin Jianshan Wang 张迎宾;赵辉川;于红军;秦庆华;王建山

作者机构：Department of MechanicsTianjin UniversityTianjin300054China Department of Astronautic Science and MechanicsHarbin Institute of TechnologyHarbin150001China 

基　　金：the National Natural Science Foundation of China(Grant Nos.12020101001,12021002,11872273,and 11890680) Tianjin Research Program of Application Foundation and Advanced Technology(Grant No.19JCYBJC19300) 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2022年第38卷第11期

页      码：115-127页

摘      要：Slender chiral filaments are ubiquitous in both artificial and biological *** to their chiral microstructures,chiral filaments usually exhibit favorable properties such as superior elasticity and unusual stretch-twist coupling ***,how these chiral microstructures affect the elastic behavior of filaments remains *** this paper,a refined Cosserat rod model with misfit or mismatching of chirality induced by inhomogeneous arrangement of chiral microstructures incorporated is *** the refined rod model,the force-displacement relationships and variation of structural chirality during the tensile processes of two typical helical structures,i.e.,single-strand helix and double-strand helix,are *** results show that the misfit of chirality can lead to a bend-twist deformation with a high coupling degree,which makes the rod much“soft”when *** chiral filaments undergo an unusual twist when stretched,corresponding to an obviously nonlinear variation of structural *** work suggests that the misfit of chirality can be used to tune the elastic behavior of chiral filaments,which is helpful in guiding the design of flexible actuators and soft devices.

主 题 词：Misfit of chirality Unusual twist Bend-twist coupling deformation Structural chirality Force-displacement relationship 

学科分类：081704[081704] 07[理学] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 070301[070301] 

核心收录：

D　O　I：10.1007/s10409-022-21604-x

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