Buckling of thin gel strip under swelling  

作　　者：Ruiqi Jiang Jianliang xiao Jizhou Song 

机构地区：[1]Department of Engineering Mechanics, Soft Matter Research Center, and Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,Zhejiang University, Hangzhou 310027, China [2]Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, USA

出　　处：《Theoretical & Applied Mechanics Letters》2017年第3期134-137,共4页力学快报（英文版）

基　　金：supports from the National Natural Science Foundation of China(Grant Nos.11372272,11622221and 11621062);the National Basic Research Program(Grant No.2015CB351901);the Fundamental Research Funds for the Central Universities

摘　　要：The buckling of thin gel film has attracted much attention due to its applications in the design of three- dimensional structure from two-dimensional template. We have established an analytical model to study the swelling-induced buckling of a thin gel strip with one edge clamped and the others free. The closed-form solutions for the amplitude and wavelength of the buckled shape are obtained by energy minimization of the total potential energy. The analytical results agree well with finite element analysis based on the inhomogeneous gel theory without any parameter fitting. The model provides a route to study complex postbuckling behaviors of thin gel films and guidelines to design the buckled configuration quantitatively by controlling the swelling ratio.The buckling of thin gel film has attracted much attention due to its applications in the design of three- dimensional structure from two-dimensional template. We have established an analytical model to study the swelling-induced buckling of a thin gel strip with one edge clamped and the others free. The closed-form solutions for the amplitude and wavelength of the buckled shape are obtained by energy minimization of the total potential energy. The analytical results agree well with finite element analysis based on the inhomogeneous gel theory without any parameter fitting. The model provides a route to study complex postbuckling behaviors of thin gel films and guidelines to design the buckled configuration quantitatively by controlling the swelling ratio.

关 键 词：Thin gel film SWELLING BUCKLING 

分 类 号：O344.1[理学—固体力学]