Three-dimensional constitutive model for shape-memory polymers considering temperature-rate dependent behavior

被引：10
|
作者：
Kim, Jinsu [1 ,2 ]
Jeon, Seung-Yeol [3 ]
Hong, Seokbin [1 ,2 ]
An, Yongsan [1 ,2 ]
Park, Haedong [4 ]
Yu, Woong-Ryeol [1 ,2 ]
机构：
[1] Seoul Natl Univ, Dept Mat Sci & Engn, 1 Gwanak Ro, Seoul 151744, South Korea
[2] Seoul Natl Univ, Res Inst Adv Mat, 1 Gwanak Ro, Seoul 151744, South Korea
[3] Korea Inst Sci & Technol KIST, Inst Adv Composite Mat, 92 Chudong Ro, Wanju Gun 55324, Jeonbuk, South Korea
[4] Korea Univ, KU KIST Grad Sch Converging Sci & Technol, Seoul 02841, South Korea
来源：
SMART MATERIALS AND STRUCTURES | 2021年 / 30卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
constitutive model; shape-memory polymers; temperature-rate dependence; thermal strain; thermomechanical behavior;
D O I：
10.1088/1361-665X/abe1d0
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The temperature-rate dependent thermomechanical behavior of shape-memory polymers (SMPs) is challenging to study, because the microstructure of SMPs cannot rearrange instantaneously to an equilibrium configuration in response to temperature changes. Herein, we report a temperature-rate dependent three-dimensional constitutive model for SMPs based on a two-phase model consisting of rubbery and glassy phases. To describe the effect of temperature rate on SMPs, the variation of the volume fraction of each phase affected by temperature was considered under different temperature-rate conditions. Additionally, the temperature-rate dependent thermal strain was incorporated into the two-phase model. The developed constitutive model was validated by simulating the shape-memory behavior of SMPs, and by comparing the simulation and experimental results under different temperature-rate conditions.
引用
收藏
页数：15
相关论文
共 50 条
12345