| 压电螺位错与椭圆夹杂的电弹相互作用 |
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| 引用本文： | 刘金喜,姜稚清,冯文杰. 压电螺位错与椭圆夹杂的电弹相互作用[J]. 应用数学和力学, 2000, 21(11): 1185-1190 |
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| 作者姓名： | 刘金喜 姜稚清 冯文杰 |
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| 作者单位： | 石家庄铁道学院力学与工程科学系, 石家庄 050043 |
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| 摘 要： | 研究了压电材料中压电螺位错与椭圆夹杂的电弹相互作用.基于扰动概念和级数展开方法,推导了基体和夹杂的弹性场和电场,在此基础上给出了作用于位错上像力的表达式.通过分析基体与夹杂的相对刚度和机电耦合强弱对像力的影响,得到了新的相互作用机理.
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| 关 键 词： | 压电材料 夹杂 位错 像力 |
| 收稿时间： | 1999-05-26 |
On the Electroelastic Interaction of a Piezoelectric Screw Dislocation With an Elliptical Inclusion in Piezoelectric Materials |
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| LIU Jin-xi,JIANG Zhi-qing,FENG Wen-jie. On the Electroelastic Interaction of a Piezoelectric Screw Dislocation With an Elliptical Inclusion in Piezoelectric Materials[J]. Applied Mathematics and Mechanics, 2000, 21(11): 1185-1190 |
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| Authors: | LIU Jin-xi JIANG Zhi-qing FENG Wen-jie |
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| Affiliation: | Department of Mechanics and Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, P R China |
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| Abstract: | The electroelastic interaction of a piezoelectric screw dislocation with an elliptical inclusion in piezoelectric materials is considered. The electroelastic fields in both the matrix and the inclusion were given explicitly by using the perturbation concept and the method of Laurent series expansion. Furthermore, the expressions of the image force acting on a piezoelectric screw disolcation were obtained. Numerical examples are provided to reveal the effect of piezoelectricity and the relative stiffness between the inclusion and the matrix on the image force. Consequently, the new interaction mechanism is found. |
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| Keywords: | piezoelectric material inclusion dislocation image force |
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