Bending Resistance and Anisotropy of Basalt Fibers Laminate Composite with Bionic Helical Structure  

作　　者：Binjie Zhang Qigang Han Hanlin Qin Junqiu Zhang Shichao Niu Zhiwu Han Luquan Ren 

机构地区：[1]Key Laboratory of Bionic Engineering(Ministry of Education,China),Jilin University,Changchun,130022,China [2]College of Materials Science and Engineering,Jilin University,Changchun,130022,China [3]Weihai Institute for Bionic,Jilin University,Weihai,264200,China

出　　处：《Journal of Bionic Engineering》2022年第3期799-815,共17页仿生工程学报（英文版）

基　　金：This work was supported by the National Key Research and Development Program of China(No.2018YFA0703300);the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(No.52021003);National Natural Science Foundation of China(No.51835006,51875244,U19A20103);Program for JLU Science and Technology Innovative Research Team(No.2020TD-03);the Natural Science Foundation of Jilin Province(No.20200201232JC);Graduate innovation research program of Jilin University(101832020CX161);Interdisciplinary Integration and Innovation Project of JLU(No.JLUXKJC2021ZZ03);supported by“Fundamental Research Funds for the Central Universities”.

摘　　要：The appendages of mantis shrimp often bear bending loads from different directions during the in the process of preying on prey with its grazing limb.Hence,it has excellent bending resistance and isotropy to confront complex and changeable external load.The outstanding performance owes to the helical Bouligand structure with a certain interlayer corner,which is also widely found in other natural materials.Hence,the bio-inspired materials with basalt fiber are fabricated with outstanding bending resistance,isotropy and toughness.The research shows laminates with 18°interlayer corners exhibit relatively excellent bending resistance and isotropy,and the laminate with 11.25°interlayer corner has best toughness.Compared with traditional composites,average bending strength along different loading direction of bio-inspired materials increased by 28%,and anisotropy decreased by 86%.Besides,the maximum toughness of laminates can increase to 1.7 times of the original.Following the introduction of interlayer corners,the bio-inspired composite tends to be isotropic.To explore the reason for the change of the isotropic performance caused by diverse interlayer corners,the Finite Element Analysis based on classical laminate theory and Tsai–Wu and Tsai–Hill failure criterion.Besides,further experiments and observations are conducted to explore possible reasons.In conclusion,following the introduction of interlayer corners,the bio-inspired composites tend to be isotropic.This bio-inspired composites are expected to be applied to various complex modern engineering fields,such as vehicle,rail transit and aerospace.

关 键 词：Helical Bouligand structure Bio-inspired composites Bending resistance ISOTROPY 

分 类 号：TB33[一般工业技术—材料科学与工程]