中国机械工程 ›› 2015, Vol. 26 ›› Issue (8): 1005-1009.

• 机械基础工程 • 上一篇    下一篇

三自由度等刚度永磁弹簧的力学特性研究

孙凤;张明;孙兴伟;金俊杰;李清;李殿起;王可   

  1. 沈阳工业大学,沈阳,110870
  • 出版日期:2015-04-25 发布日期:2015-09-10
  • 基金资助:
    国家自然科学基金资助项目(51105257);辽宁省高等学校杰出青年学者成长计划资助项目(LQJ2014012) 

Study on Mechanics Characteristics of 3-DOF Same-stiffness Permanent Magnetic Spring

Sun Feng;Zhang Ming;Sun Xingwei;Jin Junjie;Li Qing;Li Dianqi;Wang Ke   

  1. Shenyang University of Technology,Shenyang,110870
  • Online:2015-04-25 Published:2015-09-10
  • Supported by:
    National Natural Science Foundation of China(No. 51105257);

摘要:

设计出一种三自由度等刚度永磁弹簧,并根据单组永磁体结构,采用虚位移法建立其径向磁力解析模型,利用有限元方法对径向磁力进行了仿真计算。仿真结果和模型计算结果基本吻合。解析计算与仿真结果表明,该永磁弹簧的径向磁力随着径向位移的增加而增大,随着轴向位移的增大而减小。在永磁弹簧平动平面内,两个移动方向的刚度系数和垂直于平面中心的回转刚度系数均相等。在径向位移较小时,径向位移与弹簧刚度系数近似成线性关系。

关键词: 等刚度, 永磁弹簧, 径向磁力, 有限元法

Abstract:

This paper presented a 3-DOF same stiffness permanent magnetic spring. According  to the structure, the mathematical model  of permanent magnetic spring was set by virtual displacement method. The model of the spring's radial magnetic force was calculated by the mathematical model and FEM software, the calculated results are basically in agreement with the simulation results. The results show that the radial magnetic force of the permanent magnet spring increases with increasing the radial displacement, decreases with increasing the axial displacement. In translational plane, the stiffness coefficients of two moving directions and the rotational direction are equal. When the radial displacement is small, the relationship between the radial displacement and spring stiffness coefficient is approximately linear.

Key words: same-stiffness, permanent magnetic spring, radial magnetic force, finite-element method(FEM)

中图分类号: