| 两轴向磁场时磁控形状记忆合金的本构模型 |
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| 引用本文： | 杜秀丽,朱玉萍.两轴向磁场时磁控形状记忆合金的本构模型[J].太原科技大学学报,2011,32(3):198-201. |
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| 作者姓名： | 杜秀丽 朱玉萍 |
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| 作者单位： | 1. 太原科技大学应用科学学院,太原,030024
2. 江苏大学工程力学系,江苏镇江,212013 |
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| 摘 要： | 采用热力学方法推导了磁控形状记忆合金在两轴向磁场作用下的力学本构模型,考虑了马氏体变体再取向的驱动力和阻力的平衡状态,建立了马氏体变体再取向的动力学方程。该模型用于分析NiMnGa单晶试样在双向磁场作用下的非线性力学行为和滞后效应,结果表明模型的预测数据和实验结果吻合性较好,从而说明模型是可行的。
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| 关 键 词： | 磁控形状记忆合金 本构模型 两轴向磁场 热力学 |
Constitutive Model of Magnetic Shape Memory Alloy under Biaxial Magnetic Field |
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| DU Xiu-li,ZHU Yu-ping.Constitutive Model of Magnetic Shape Memory Alloy under Biaxial Magnetic Field[J].Journal of Taiyuan University of Science and Technology,2011,32(3):198-201. |
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| Authors: | DU Xiu-li ZHU Yu-ping |
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| Institution: | DU Xiu-li1,ZHU Yu-ping2(1.School of Applied Science,Taiyuan University of Science and Technology,Taiyuan 030024,China,2.Department of Engineering Mechanics,Jiangsu University,Jiangsu Zhenjiang 212013,China) |
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| Abstract: | A constitutive model for magnetic shape memory alloy is developed under biaxial magnetic field.The kinetic equation is established in terms of the balance between thermodynamic driving force and resistive force for calculating the volume fraction of martensite variant.The nonlinear and hysteretic strain of MSMA is investigated for a NiMnGa single-crystal specimen.The theoretical results are found to be in general agreement with experimental data,and the method is proved to be credible. |
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| Keywords: | Magnetic shape memory alloy constitutive model biaxial magnetic field thermodynamics |
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