Study on behaviors of functionally graded shape memory alloy cylinder

作     者：Bingfei Liu Qingfei Wang Rui Zhou Chunzhi Du Yanan Zhang Pan Zhang 

作者机构：Airport College Civil Aviation University of China Tianjin 300300 China Aeronautical engineering College Civil Aviation University of China Tianjin 300300 China 

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

年 卷 期：2017年第30卷第6期

页      面：608-617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：the financial support of National Natural Science Foundation of China (no.11502284, 51505483, 11772041) the Fundamental Research Funds for the Central Universities (3122016C006) of China 

主　　题：Shape memory alloy Gradient Constitutive model Cylinder Internal pressure 

摘      要：For better controllability in actuations,it is desirable to create Functionally Graded Shape Memory Alloys（FG-SMAs）in the actuation direction.It can be achieved by applying different heat treatment processes to create the gradient along the radius of a SMA cylinder.Analytical solutions are derived to predict the macroscopic behaviors of such a functionally graded SMA cylinder.The Tresca yield criterion and linear hardening are used to describe the different phase transformations with different gradient parameters.The numerical results for an example of the model exhibit different pseudo-elastic behaviors from the non-gradient case,as well as a variational hysteresis loop for the transformation,providing a mechanism for easy actuation control.When the gradient disappears,the model can degenerate to the non-gradient case.