期刊刊名：南開學報 　 卷期：15卷1期

篇名出版日期：2018年6月1日

作者：Ming-Ho Shen, Shih-Yu Hung, Shih-Nung Chen,沈明河,洪仕育,陳世濃

語言：English

關鍵字：Dislocation, Image forces, Stroh formalism, Alternating technique,差排,映射力,史磋公式,交替疊代法

被點閱次數：0次

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摘要：
The interaction between a singularity and a semi-infinite interfacial crack in a piezoelectric bimaterial is studied using the extended Stroh formalism. The singularity considered here involves a line dislocation, a line force and a line charge. The crack surface is assumed to be mechanically free and electrically open. Based on the methods of mapping function, analytical continuation in conjunction with alternating technique, the complex potentials are derived in each medium of the anisotropic piezoelectric bimaterial. The generalized stress fields, generalized stress intensity factors and the image forces exerted on the dislocation are given explicitly. Numerical results demonstrate that the boundary conditions at the interface and the crack surface are satisfied. They also show the effects of the singularity and material combination on the generalized stress fields, generalized stress intensity factors and the image forces.

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