磁控形状记忆合金在结构振动控制中的应用研究

磁控形状记忆合金(MSMA)是一种在磁场控制下可产生较大变形,且具有形状记忆功能的新型智能材料,利用其磁控特性可以制作智能作动器进行结构的振动控制。首先介绍了MSMA材料在磁场作用下的变形机理与磁控特性,在此基础上提出了两种可以应用于结构振动控制中的新型MSMA驱动器,并分析了其工作原理和设计方法,最后阐述了利用MSMA的逆特性制作MSMA自传感作动器的关键技术及解决方法,为其在土木工程领域的应用打下了良好的基础。

Study on Application of Magnetic Shape Memory Alloys to Vibration Control of Structures

Magnetic shape memory alloy（MSMA） is a new intelligent material that can produce large stain in magnetic field,and meanwhile has the shape memory function.Using these characteristics of MSMA,one can fabricate intelligent actuators for vibration control of structures.At first,the mechanism of deformation of MSMA in magnetic field and its characteristics of magnetic control are introduced in this paper.On this base,two new MSMA actuators,which may be applied to vibration control of structures,are proposed.Their working principle is analyzed and the design method is given.Finally,the reciprocal characteristics of MSMA,key technology and its solution method of the MSMA self-sensing actuators are described.This study may set a foundation for MSMA＇s application in civil engineering.