Design and Magnetic Field Simulation of Giant Magnetostrictive Bone Conduction Pronunciation Vibrator

Abstract:

Giant magnetostrictive material (GMM) has the characteristics of big magneto-mechanical coupling coefficient, enormous strain and broad frequency response, which is widely used in audio and ultrasonic technology, ultra precision machining, testing technology, fluid control, vibration control and all kinds of sensors in recent years. This paper introduces some of the good qualities of GMM, compared with electromagnetic and piezoelectric materials, which are used extensively for bone conduction hearing device at present; a bow type giant magnetostrictive bone conduction pronunciation vibrator with simple structure and reliable performance is designed; the paper focuses on establishing the vibrator model and the simulation of ANSYS electromagnetics model; the radial magnetic field distribution is also analyzed. All the work provides reference for structure optimization and the selection of coupling materials for the vibrator.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1291-1294
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1291
• Online since: December 2014
• Authors: Zheng Long Zhao*, Zhong Bo He, Dong Wei Li, Guang Ming Xue, Zhao Shu Yang
• Keywords: Bow Type Structure, Giant Magnetostrictive, Simulation, Vibrator

References

[1] G. Olabi, A. Grunwald. Design and application of magnetostrictive materials[J]. Materials&Design, 2007, 29: 469-483.

DOI: 10.1016/j.matdes.2006.12.016

[2] Phuong Tra, Tomasz Letowski, Maranda McBride. Bone-Conduction Microphone: HeadSensitivity Mapping for Speech Intelligibility and Sound Quality [J]. Human Research and Engineering Directorate: (2008).

DOI: 10.1109/icalip.2008.4590150

[3] R. WANG. Giant Magnetostrictive Material Loudspeaker System[J], Journal of Beijing Institute of Technology. 2008, 17(2): 237-240.

[4] M. Li, Y.F. Lv, Giant Magnetostrictive Material and Its Application[J]. Journal of The Modern Electronic Technology. 2005, 18: 114-117.

[5] C.R. Qiu . Study on Piezoelectric Bone Conduction Hearing Equipment with Circular Structure [M]. Zhejiang University: (2008).

[6] X.Y. Wang. Finite Element Model of Giant Magnetostrictive Actuator and Its Magnetic Field Analysis[J]. China Civil Engineering Journal. 2012, 172-176.

[7] P. Huang. The Computer Simulation for the Speaker Magnetic Circuit[J]. J Magn Mater Devices. 2007, 39(2): 55-57.

[8] M. Xue. Simulation Analysis of Magnetic Field Distribution of GMA Based on a Displacement Transmission Mechanism[J]. J Magn Mater Devices. 2014, 45(1): 10-13.