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Vol. 160, Issue 12, December 2013, pp. 176-183

 

Bullet

 

Performance Analysis of Magnetostrictive Cantilever Beam with Modeling
 
1, 2, 3 Qinghua CAO, 2 Dingfang CHEN, 2 Chuan LI, 3 Quanguo LU, 3 Jianwu YAN

1 School of Automation, Wuhan University of Technology, 430083,Wuhan, China 2 Institute of Intelligent Manufacturing and Control, Wuhan University of Technology, 430063, Wuhan, China 3 Institute of Micro/nano Actuation and Control, Nanchang Institute of Technology, 330099, Nanchang, China

 

Received: 25 September 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems

 

Abstract: A magnetostrictive cantilever beam model is established by combining an energy-based constitutive magnetostrictive model with the classical Euler-Bernoulli beam theory constitutive relations that describe the material behavior are based on energy minimization techniques. We use the saturation magnetization, the magnetostrictive constant and the 4th and 6th order anisotropy constants to calculate the Zeeman, stress-induced anisotropy and magnetocrystalline anisotropy energies per unit volume. The stress of the magnetostrictive cantilever beam is solved by classical beam theory. Experiments and simulations are conducted to study performance of the cantilever. The results demonstrated the sensing is primarily due to the dominating effect of compression over tension. A critical bias magnetic field is required below which the magnetostrictive sensing cannot be observed under bending.

 

Keywords: Magnetostrictive, Beam, Modeling, Magnetization.

 

 

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