摘要
为放大超磁致伸缩致动器的位移,设计了位移传递机构以叠加致动器中超磁致伸缩棒和筒的输出。针对该致动器中棒和筒的径向磁场分布,基于有限元法建立了磁场强度的计算电磁学模型,并利用ANSYS软件进行了仿真。通过仿真得到棒和筒上任一点磁场强度值,选取多个截面的磁场强度进行平均计算,得到近输出端、近底座端和中间部位三处不同位置的磁场径向分布规律及位移传递机构相对磁导率对它的影响。研究结果对于位移传递机构材料选择具有重要的意义。
To magnify the displacement of giant magnetostrictive actuator, a displacement transmission mechanism is designed to overlay the output of giant magnetostrictive rod and canister. Electromagnetic calculation model is established based on finite element method and magnetic field distribution is simulated by ANSYS software. Magnetic field strength at any point inside the material and average value of magnetic field strength of diferent sections is obtained. And resultantly radial field distribution at three different positions （near output end, near base end and middle part） and influence of permeability on them is obtained. The result is of important significance for the selection of mechanism body material.
出处
《磁性材料及器件》
北大核心
2014年第1期10-13,34,共5页
Journal of Magnetic Materials and Devices
基金
国家自然科学基金资助项目(51275525)
关键词
超磁致伸缩致动器
位移传递机构
磁导率
径向磁场
仿真
giant magnetostrictive actuator
displacement transmission mechanism
permeability
radial magnetic field strength
simulation
