Effects of external pressure on phase transformation of shape memory alloy cylinder

被引：6

作者：

Liu, Bingfei ^{[1
]}

Du, Chunzhi ^{[1
]}

机构：

[1] Civil Aviat Univ China, Airport Coll, Tianjin 300300, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2014年 / 88卷

基金：

中国国家自然科学基金;

关键词：

Shape memory alloy; External pressure; Constitutive model; BEHAVIOR; ACTUATORS; GROWTH; MODEL;

D O I：

10.1016/j.ijmecsci.2014.06.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Analytical solutions are derived for the isothermal pseudoelastic response of a Shape memory alloy (SMA) thick-walled cylinder subjected to external pressure. The Tresca transformation criterion and linear hardening are used to describe the phase transformation. The different transformation stages of the cylinder at isothermal circumstances are first discussed. For each transformation stage, solutions for the stresses, volume fractions of martensite and transformation strains are given, respectively. The results show that, the external pressure can induce the martensitic phase transformation of the SMA thick-walled cylinder, while after the transformation happens, there is little effect on the phase transformation by the increasing external pressures. This work can provide a theoretical basis for future analysis on SMA cylinders. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：8 / 16

页数：9

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