北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (8): 1639-1645.doi: 10.13700/j.bh.1001-5965.2018.0737

• 超声加工技术 • 上一篇    下一篇

超磁致伸缩超声换能器的磁路优化设计

刘强1,2, 李鹏阳1,2, 许光耀1,2, 王权岱1,2, 杨明顺1,2   

  1. 1. 西安理工大学 教育部数控机床及机械制造装备集成重点实验室, 西安 710048;
    2. 西安理工大学 陕西省制造装备重点实验室, 西安 710048
  • 收稿日期:2018-12-18 出版日期:2019-08-20 发布日期:2019-09-06
  • 通讯作者: 李鹏阳 E-mail:lipengyang@xaut.edu.cn
  • 作者简介:刘强 男,硕士研究生。主要研究方向:超声振动板料渐进成形;李鹏阳 男,博士,教授,博士生导师。主要研究方向:表面接触和摩擦、超声振动加工、机械加工状态监测等。
  • 基金资助:
    陕西省重点研发计划(2017GY-028);陕西省科技创新创业“双导师制”合作科技项目(2019JM-593)

Optimal design for magnetic circuit in giant magnetostrictive ultrasonic transducer

LIU Qiang1,2, LI Pengyang1,2, XU Guangyao1,2, WANG Quandai1,2, YANG Mingshun1,2   

  1. 1. The Ministry of Education Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment, Xi'an University of Technology, Xi'an 710048, China;
    2. Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an 710048, China
  • Received:2018-12-18 Online:2019-08-20 Published:2019-09-06
  • Supported by:
    Shaanxi Provincial Key Research and Development Program (2017GY-028); Shaanxi Province Science and Technology Innovation and Entrepreneurship "Double Tutor System" Cooperative Science and Technology Project (2019JM-593)

摘要: 为了改善磁路环境,最大限度地降低超磁致伸缩超声换能器的发热,将磁路间隙作为研究对象,采用Maxwell有限元软件对磁路间隙与超磁致伸缩材料(GMM)棒的磁场强度的关系进行了分析,并通过实验对超声换能器的阻抗和振幅,以及GMM棒的温度进行了测量。结果表明:随着磁路间隙的增大,GMM棒的磁场强度和磁场均匀度减小;随着导磁圆筒槽宽的增大,超声换能器的谐振频率基本一致,GMM棒的温度减小。当导磁圆筒的槽宽约为6 mm时,该GMM棒的磁场均匀度最高,机械品质因数最大,这对超磁致伸缩超声换能器的优化设计具有重要的意义。

关键词: 超磁致伸缩材料(GMM), 超声换能器, 磁路优化, 磁场均匀度, 磁场强度

Abstract: In order to improve the magnetic circuit environment and minimize the heating of the giant magnetostrictive ultrasonic transducer, the magnetic path gap was taken as the research object, and the relationships between the magnetic path gap and the magnetic field strength of the giant magnetostrictive material (GMM) rod were analyzed by Maxwell finite element software. The impedance and amplitude of the ultrasonic transducer and the temperature of the GMM rod were measured by experiments. Experimental results show that the magnetic field strength and magnetic field uniformity of the GMM rod decrease with the increase of the magnetic path gap. As the slot width of the magnetically permeable cylinder increases, the resonant frequency of the ultrasonic transducer is basically the same, the temperature of the GMM rod is reduced; When the slot width of the magnetic cylinder is about 6 mm, the magnetic field uniformity of the GMM rod is the highest and the mechanical quality factor is the largest, which is of great significance for the optimal design of the giant magnetostrictive ultrasonic transducer.

Key words: giant magnetostrictive material (GMM), ultrasonic transducer, magnetic circuit optimization, magnetic field uniformity, magnetic field intensity

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发