期刊
MECHANICS OF MATERIALS
卷 111, 期 -, 页码 1-14出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mechmat.2017.04.008
关键词
Shape memory polymers; Finite deformation; Constitutive model; Glass transition; Internal state variable
资金
- National Natural Science Foundation of China [11572153]
- Natural Science Foundation of Jiangsu Province of China [BK20151467]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Outstanding Scientific and Technological Innovation Team in Colleges and Universities of Jiangsu Province
- Doctor Special Foundation of Nanjing Institute of Technology [ZKJ201603]
Shape memory polymers (SMPs) are a class of smart materials which can recover a large pre-deformed shape in response to external stimulus. A thermoviscoelastic finite deformation constitutive model incorporated with structural and stress relaxation to capture the material behavior in the vicinity of the glass transition is developed for thermally activated amorphous SMPs in the paper. The incorporation of the Adam-Gibbs model for structure relaxation and the modified Eying model for viscous flow into a thermoviscoelastic finite deformation modeling framework is the main feature of the model. Differing from the traditional phenomenological fictive temperature modeling approach, an internal state variable modeling approach developed recently based on thermodynamics is used in the model. Besides, the temperature dependence of the model parameters is studied in the research. Comparisons between the simulation results and the experimental data show good agreement. Furthermore, the predictability of the model is examined by a parametric study and the results also demonstrate the validity of the model. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据