Experiment on Nonlinear Properties Coupling Electromagnetism with Mechanics of Giant Rare Earth Magnetostrictive Materials
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：Sun Huagang Yuan Huiqun
Key words：giant rare earth giant magnetostriction material; magnetostrictive strain coefficient; magnetomechanical coupling coefficient; nonlinear properties;
Abstract: The electromagnetic and mechanical coupling properties of giant rare earth giant magnetostriction material TbxDy1 -xFe2 -z (0. 27 ≤x ≤ 0.3, 0 ≤ z ≤ 0.1 ) alloys were investigated by means of self-fabricated test apparatus. The effect of coupling mechanical with electromagnetic on magnetostrictive strain coefficient was discussed. The physical model of the coupling system was established. Based on the equivalent circuit of the coupling system, the magnetomechanical coupling coefficient was derived by means of impedance resistance analysis method.
Sun Huagang1，Yuan Huiqun1
(1.School of Science, Northeastern University, Shenyang 110004, China)
Abstract:The electromagnetic and mechanical coupling properties of giant rare earth giant magnetostriction material TbxDy1 -xFe2 -z (0. 27 ≤x ≤ 0.3, 0 ≤ z ≤ 0.1 ) alloys were investigated by means of self-fabricated test apparatus. The effect of coupling mechanical with electromagnetic on magnetostrictive strain coefficient was discussed. The physical model of the coupling system was established. Based on the equivalent circuit of the coupling system, the magnetomechanical coupling coefficient was derived by means of impedance resistance analysis method.
Key words:giant rare earth giant magnetostriction material; magnetostrictive strain coefficient; magnetomechanical coupling coefficient; nonlinear properties;
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