Exact simulation for direction-dependent large elastic strain responses of soft fibre-reinforced composites  

作　　者：Huifeng XI Guicheng ZHAO OBRUHNS Siyu WANG Heng XIAO 

机构地区：[1]School of Mechanics and Construction Engineering,MOE Key Lab of Disaster Forecast and Control in Engineering,Jinan University,Guangzhou 510632,China [2]Institute of Mechanics,Ruhr-University Bochum,Bochum D-44780,Germany

出　　处：《Applied Mathematics and Mechanics(English Edition)》2023年第9期1497-1510,共14页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12172151 and12172149);the Research Project of Introducing High-level Foreign Experts from the Ministry of Sicence and Technology of China(No.G20221990122);the Start-up Fund from Jinan University(Guangzhou)of China(No.88019062)。

摘　　要：An explicit form of the elastic strain-energy function for direction-dependent large elastic strain behaviors of soft fiber-reinforced composites is first presented based upon a decoupled approach for simulating complex nonlinear coupling effects.From this form,the exact closed-form solutions are then obtained for the uniaxial tension responses in the fiber and cross-fiber directions.With such exact solutions,the issue of simultaneously simulating strongly coupling nonlinear responses in the fiber and cross-fiber directions may be reduced to the issue of separately treating each decoupled uniaxial stress-strain response,thus bypassing usual complexities and uncertainties involved in identifying a large number of strongly coupled adjustable parameters.The numerical examples given are in good agreement with the experimental data for large strain responses.

关 键 词：soft solid fiber-reinforced composite large elastic strain transverse isotropy strain-energy function logarithmic strain decoupling approach 

分 类 号：O33[理学—一般力学与力学基础]