摘要
提高超磁致伸缩驱动器(GMA)驱动效率的关键环节是建立优化的驱动器磁路。基于超磁致伸缩材料(GMM)轴向上的简化压磁方程,得出轴向应变S33与磁通量密度B3的关系;并根据磁路定理讨论磁路结构和材料磁导率对磁场的影响;应用有限元方法对开磁路和闭合磁路的磁场进行分析,得出磁路优化设计的方法。
For increasing the driving efficiency of Giant Magnetostrictive Actuator（GMA）, the key point is establishing the optimum magnetic circuit. Based on the Giant Magnetostrictive Material（GMM） axial pressure-magnetization equation, the relation between axial strain S33 and axial magnetic flux density B3 was Gained; according to the theorem of magnetic path, the effect of the magnetic structure and the relative permeability on the magnetic field was explored; using the finite-element method analyzed the magnetic field of the open and closed magnetic circuit, the method of the magnetic circuit optimum design was gained.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2008年第5期72-75,共4页
Ordnance Material Science and Engineering
关键词
超磁致伸缩
有限元
磁导率
磁路
giant magnetostrictive
finite-element method
permeability
magnetic circuit
