Thermoviscoelastic Modeling Approach for Predicting the Recovery Behaviors of Thermally Activated Amorphous Shape Memory Polymers

作     者：GU Jianping FANG Changqing SUN Huiyu ZHANG Xiaopeng 

作者机构：Jiangsu Key Laboratory of Advanced Structural Materials and Application TechnologySchool of Materials Science and EngineeringNanjing Institute of TechnologyNanjing 211167P.R.China Shanghai Space Propulsion Technology Research InstituteShanghai 201109P.R.China State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2019年第36卷第5期

页      面：798-807页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of Jiangsu Province of China (No. BK20170759) the National Natural Science Foundation of China (No. 11572153) Jiangsu Government Scholarship for Overseas Studies a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) Outstanding Scientific and Technological Innovation Team in Colleges and Universities of Jiangsu Province the Doctor Special Foundation and the Research Fund of Nanjing Institute of Technology (Nos. ZKJ201603, YKJ201312) 

主　　题：shape memory polymers(SMPs) thermoviscoelastic modeling approach finite deformation recovery behavior 

摘      要：A thermoviscoelastic modeling approach is developed to predict the recovery behaviors of the thermally activated amorphous shape memory polymers(SMPs)based on the generalized finite deformation viscoelasticity *** this paper,a series of moduli and relaxation times of the generalized Maxwell model is estimated from the stress relaxation master curve by using the nonlinear regression(NLREG)*** that the amorphous SMPs are approximately incompressible isotropic elastomers in the rubbery state,the hyperelastic response of the materials is well modeled with a hyperelastic model in Ogden *** addition,the Williams-Landel-Ferry(WLF)equation is used to describe the horizontal shift factor obtained with time-temperature superposition principle(TTSP).The finite element simulations show good agreement with the experimental thermomechanical ***,the possibility of developing a temperature-responsive intravascular stent with the SMP studied here is investigated in terms of its thermomechanical ***,it can be concluded that the model has good prediction capabilities for the recovery behaviors of amorphous SMPs.