东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (4): 549-553.DOI: -

• 论著 • 上一篇    下一篇

考虑温变时超磁致伸缩微致动器的动力学分析

袁惠群;吴文波;李莹;李东;   

  1. 东北大学理学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(10772043);;

Dynamic analysis of a giant magnetostrictive actuator at varying temperature

Yuan, Hui-Qun (1); Wu, Wen-Bo (1); Li, Ying (1); Li, Dong (1)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Yuan, H.-Q.
  • About author:-
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摘要： 建立了考虑温度变化时的超磁致伸缩微致动器的动态振动微分方程,得到了微致动器振动响应的非共振解析解.在已知磁化强度情况下,讨论了温度和预应力对振动响应的影响,并得到了位移响应随温度变化的系数;解出由于超磁致伸缩材料非线性而产生的亚谐共振解,讨论了温度对共振因子的影响.仿真结果表明,超磁致伸缩材料的磁-力-热耦合非线性对微致动器的振动响应有明显影响,在分析与设计微致动器时需要考虑温度的影响.

关键词: 超磁致伸缩微致动器, 磁-力-热耦合非线性, 动力学分析, 振动响应, 温度影响

Abstract: A simple dynamic model was established to determine the effect of temperature on vibratory response of the giant magnetostrictive actuator, resulting in a differential equation of motion containing terms of temperature. Under known magnetization intensity, the effect of temperature and pre-stress on vibratory response was discussed, and a coefficient of temperature dependent displacement response determined. The resonance solution caused by giant magnetostrictive nonlinearity was derived, and the effect of temperature on resonance factors discussed. Simulation results indicated that magneto-thermo-mechanical coupled nonlinearity greatly affected vibratory response of the actuator, and that temperature should be considered in analysis and design of the actuator.

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