On Behaviors of Functionally Graded SMAs under Thermo-Mechanical Coupling

作     者：Bingfei Liu Pengcheng Ni Wei Zhang 

作者机构：Airport CollegeCivil Aviation University of China Sino-European Institute of Aviation EngineeringCivil Aviation University of China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2016年第29卷第1期

页      面：46-58页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(No.11502284) the Tianjin Natural Science Foundation(No.15JCQNJC42600) the Fundamental Research Funds for the Central Universities of China(No.3122014C015) the open fund of the airport project(No.JCGC2015KFJJ005) 

主　　题：functionally graded SMAs phase transformation constitutive model 

摘      要：An analytical solution is obtained for the Functionally Graded Shape Memory Alloy （FG-SMA） composites subjected to thermo-mechanical coupling. Young＇s modulus and thermal expansion coefficient of the material are assumed to vary in different forms of power function through the thickness, with the Poisson＇s ratio being constant. An SMA constitutive model is combined with the averaging techniques of composite to determine the mechanical properties of the FG-SMA composites. Different phase transformation steps and the corresponding stress distributions through the thickness direction are given. The results show that the average stresses decrease as the transformations proceed.