期刊
MECHANICS OF MATERIALS
卷 93, 期 -, 页码 43-62出版社
ELSEVIER
DOI: 10.1016/j.mechmat.2015.10.014
关键词
Shape memory polymers; Constitutive model; Large deformation; Multiplicative decomposition; Shape memory strain
资金
- Mid-career Researcher Program through the National Research Foundation of Korea (NRF) grant - Korean Government (MSIP) [2013R1A2A2A01067717]
- National Research Foundation of Korea [2013R1A2A2A01067717] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Using a two-phase (rubbery and glassy) phenomenological model and shape memory strains, a three-dimensional constitutive model for shape memory polymers (SMPs) was developed that can simulate multi-axial and large deformation behavior (up to 200% of strain) of SMPs. To derive a constitutive equation, the total deformation gradient was multiplicatively decomposed into hyperelastic, viscoelastic, viscoplastic, and shape memory strains using Helmholtz free energy and the Clausius-Duhem inequality. The shape memory strain was determined from the total deformation by assuming proportionality to the total deformation. The developed constitutive model was validated by simulating the shape memory behavior of SMPs using a finite element method and comparing the simulation results with experiments. Finally, the capabilities of the constitutive equation were demonstrated by simulating constrained shape recovery behavior of SMPs. (C) 2015 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