| 磁电弹双材料中的螺位错 |
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| 引用本文： | 齐敏,刘金喜.磁电弹双材料中的螺位错[J].石家庄铁道学院学报,2006,19(2):23-27,35. |
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| 作者姓名： | 齐敏 刘金喜 |
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| 作者单位： | 石家庄铁道学院工程力学系 河北石家庄050043 |
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| 摘 要： | 研究无限大磁电双材料中的螺位错问题。使用镜像位错法,得到了位错产生的弹性场、电场和磁场以及作用在位错上的像力。结果表明,两相之间的相互作用使得位错可以引起电场和磁场,这种现象对于单相磁电弹材料是不存在的。详细分析了压电-压磁双材料中应力场、电位移和磁感应强度的特性以及位错与界面的相互作用。
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| 关 键 词： | 磁电弹材料 压电材料 螺位错 像力 |
| 文章编号： | 1006-3226（2006）02-0023-06 |
| 收稿时间： | 2005-11-24 |
| 修稿时间： | 2005-11-24 |
A Screw Dislocation in a Magneto-electro-elastic Bi-material |
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| Qi Min,Liu Jinxi.A Screw Dislocation in a Magneto-electro-elastic Bi-material[J].Journal of Shijiazhuang Railway Institute,2006,19(2):23-27,35. |
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| Authors: | Qi Min Liu Jinxi |
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| Institution: | Department of Engineering Mechanics, Shijiazhuang Railway Institute, Shijiazhuang 050043, China |
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| Abstract: | This paper is concerned with a screw dislocation in a magneto-electro-elastic(MEE) bi-material.The magnetic,electrical and elastic fields induced by the dislocation are derived using the image dislocation approach.We find that a screw dislocation in a MEE bi-material can induce the electric and magnetic fields due to the interaction between two phases.However,this phenomenon is inexistent in a homogenous MEE medium.The characteristics of the stress,electric displacement and magnetic induction and the interaction between dislocation and interface are analyzed in detail. |
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| Keywords: | magneto-electro-elastic material piezoelectric material screw dislocation image force |
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