A simple, Gibbs potential based multinetwork model for shape memory polymers

被引:0
作者
Srinivasa, Arun R. [1 ]
Gosh, P. [1 ]
机构
[1] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA
来源
SMART DEVICES: MODELING OF MATERIAL SYSTEMS | 2008年 / 1029卷
关键词
shape memory polymers; gibbs potential; multinetwork model; shape fixity;
D O I
暂无
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The aim of this paper is to demonstrate a Gibbs potential based approach for the development of the constitutive equations for a shape memory polymer where the shape retention and recovery upon heating is controlled by a glass transition process. The approach is motivated by the use of a simple spring-dashpot type analogy and the resulting equations are classified as state equations for the thermoelastic spring like response and a kinetic equation for the frictional dashpot. The governing equations are written in a state evolution form as a set of ordinary differential equations to be solved. The entire set of equations are developed starting from the basic conservation laws for a wire together with the laws of thermodynamics. The solution for a simple thermomechanical shape setting and recovery cycle is obtained using Matlab. It is shown that the results are in qualitative agreement with experiments performed on polyurethane.
引用
收藏
页码:58 / 74
页数:17
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