Magneto-thermo-mechanical characterization of giant magnetostrictive materials

• Published in: Rare metals 2013-10, Vol.32 (5), p.486-489
• Main Authors: Wang, Li, Wang, Bo-Wen, Wang, Zhi-Hua, Weng, Ling, Huang, Wen-Mei, Zhou, Yan
• Format: Article
• Language: English
• Subjects: Biomaterials; Chemistry and Materials Science; Energy; Materials Engineering; Materials Science; Metallic Materials; Nanoscale Science and Technology; Physical Chemistry; Terfenol-D; 实验测试; 巨磁致伸缩材料; 机械特性; 诱导温度; 超磁致伸缩材料; 轴向应力; 非线性模型
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-013-0133-y

The variations of magnetization and magneto- striction with temperature and stress were investigated through the analysis of the effective field, induced by temperature and stress. A nonlinear magnetostrictive model of giant magnetostrictive materials was proposed. The proposed model can be used to calculate the magnetostrictive characterization of giant magnetostrictive materi- als in different temperatures and under different stresses. The coupling effects of axial stress, magnetic field, and temperature on the magnetostriction of a Terfenol-D rod were numerically simulated as well as experimentally tested. Comparison between the calculating and experimental results shows that the proposed model can better describe the magneto-thermo-mechanical characteristics of Terfenol-D rod under different temperatures and compressive stress. Therefore, the proposed model possesses an important significance for the design of magnetostrictive devices.