Inspired by Tree Frog:Bionic Design of Tread Pattern and Its Wet Friction Properties  

作　　者：Donghui Chen Xiao Yang Menghua Zhong Chong Chen Lihui Wang Jingchun Wang Xiaohui Weng Yinwu Li Zhiyong Chang 

机构地区：[1]College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China [2]Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun 130022,China [3]School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130022,China

出　　处：《Journal of Bionic Engineering》2022年第4期1064-1076,共13页仿生工程学报（英文版）

基　　金：supported by the National Key R&D Plan(2016YFD0701102);the Graduate Innovation Fund of Jilin University(101832020CX166);the Science-Technology Development Plan Project of Jilin Province(20200403038SF,20200501013GX,20200403006SF);the"13th Five-Year Plan"Scientific Research Foundation of the Education Department of Jilin Province(JJKH20201000KJ,JJKH20211120KJ);the Talent Development Foundation of Jilin Province(2020015);the Fundamental Research Foundation for the Central Universities.

摘　　要：The wet grip of tire has always been the focus because it is related to the personal safety of passengers directly.Many methods were employed to improve the wet grip of tire.Researchers paid more attention on bionics method recent years.In nature,tree frogs have high adhesion ability in wet environment,which is mainly due to their footpads having fine polygon grooves(mainly hexagon grooves).To improve the performance of wet grip of tire,from the perspective of bionics,inspired by the footpad of tree frog,the bionic hexagon tread pattern was designed.The friction test was carried out to compare with the common tread patterns such as serrated,striped and square patterns.The results showed that the bionic hexagon tread pattern generally had high friction coefficient and directional stability of friction.The main reason was that the hexagon tread block was less affected by the friction-induced torque and the groove of bionic hexagon tread pattern had better drainage characteristic.The bionic hexagon tread pattern provides new idea and method for the design of tires with high wet grip.

关 键 词：Tread pattern Wet grip BIONIC Foot pad of tree frog ADHESION Wet friction 

分 类 号：Q81[生物学—生物工程]