A Thermo-Mechanical Constitutive Model for Glassy Shape Memory Polymers
Glassy shape memory polymer materials are applied successfully in biomedical fields due to their large recovery deformation,excellent biocompatibility and unique biodegradability.To predict the thermo-mechanical behavior of glassy shape memory polymers in biomedical devices accurately,a reasonably three-dimensional thermo-mechanical constitutive model must be established firstly.A one-dimensional linear-elastic constitutive model proposed by Tobushi et.al.(1997) was extended to capture the loading level dependent degradation of shape memory effect by introducing new nonlinear evolution equations with threshold values.Comparisons between experiments and simulations were carried to validate the extended model.Simulation results agree with experiments well,especially for the high loading levels.
Shape memory polymers Viscoelastic Nonlinear Threshold value
Jian Li Shiyu Dong Qianhua Kan Guozheng Kang Wenyi Yan
Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province,School of Mechanics and En Department of Mechanical and Aerospace Engineering,Monash University,Clayton,VIC3800,Australia
国际会议
2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)
天津
英文
96-100
2016-05-26（万方平台首次上网日期，不代表论文的发表时间）