基于形状记忆合金驱动发电结构的有限元分析  

Finite element analysis of driving power structure based on shape memory alloy

作　　者：高祥[1] 王利[1] 

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《兵器材料科学与工程》2014年第2期88-91,共4页Ordnance Material Science and Engineering

摘　　要：设计一种形状记忆合金驱动发电结构,对该结构进行分析研究。通过对形状记忆合金在不同的温度点上的回复应力、回复应变的测试,利用本构关系求得不同温度下形状记忆合金的弹性模量,采用负热应变的方法,利用有限元软件ANSYS进行建模和分析,得到不同温度下压电悬臂梁结构的变形情况以及电压的变化情况,为压电材料能量转换装置提供了一种有效依据。A driving power structure of shape memory alloy was designed, and the structure was studied. Based on the test of recovery stress and recovery strain under different temperature points of shape memory alloy, the elastic modulus of shape memory alloy under different temperatures was obtained by constitutive relation. With the method of negative thermal strain, the finite element software ANSYS was employed to get the deflection of piezoelectric cantilever beam structure and voltage changes under different temperatures. The results provide an effective basis for the energy conversion device of piezoelectric materials.

关 键 词：形状记忆合金 回复应力 回复应变 负热应变 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]