超磁致伸缩致动器轴向谐振频率计算与实验研究  

Calculation and Experimental Research of Axial Resonant Frequency of Giant Magnetostrictive Actuator

作　　者：杨雷[1] 张天丽[1] 蒋成保[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191

出　　处：《航空学报》2008年第5期1381-1385,共5页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(60534020);教育部"新世纪优秀人才支持计划"(NCET-04-0165)

摘　　要：为提高超磁致伸缩致动器(GMA)的设计效率,建立了GMA动力学模型和ANSYS有限元模型,对其轴向谐振频率进行了计算和模拟,并进行了GMA轴向谐振频率分析实验。通过实验数值和计算值及有限元分析结果的对比,动力学模型计算所得的GMA轴向谐振频率与实验值的误差小于5%,ANSYS分析所得的GMA轴向谐振频率与实验值的误差小于3%,验证了动力学模型和有限元模型的有效性。最后,通过ANSYS有限元分析了GMA各部件对其轴向谐振频率的影响,并提出利用有限元分析来提高GMA的结构刚度从而改善其轴向谐振频率的方法。A dynamics model and ANSYS model is proposed to improve the design efficiency of a giant magnetostrictive actuator （GMA）, and calculation and simulation of its axial resonant frequency are performed. Its axial resonant frequency experiment is also performed. The results show that the error between the data from the dynamics model and the experimental data is less than 5%, and that the error between the data from the ANSYS model and the experimental data is less than 3%. This testifies the dynamics model and ANSYS model are valid. Finally, the ANSYS model is used to study the influence of axial resonant frequency on different parts of the GMA, and a method to improve its axial resonant frequency is proposed through enhancing the structural rigidity of the GMA.

关 键 词：超磁致伸缩致动器 谐振频率 动力学模型 ANSYS模型 

分 类 号：TB535.1[理学—物理]