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首页> 外文期刊>Key Engineering Materials >Interaction of a Screw Dislocation with an Interfacial Crack in Two Dissimilar Piezoelectric Layers
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Interaction of a Screw Dislocation with an Interfacial Crack in Two Dissimilar Piezoelectric Layers

机译:螺钉位错与两个不同压电层中界面裂纹的相互作用

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摘要

A screw dislocation interacting with a semi-infinite interfacial crack in two dissimilar piezoelectric layers is studied. The complex variable method and the conformal mapping technique are employed to obtain the solution of the problem. The stress and electric displacement intensity factors are given explicitly. We find that the stress and electric displacement intensity factors depend on the effective electro-elastic material constants. Numerical example shows that the influence of piezoelectric effect on the crack tip shielding is significant.
机译:研究了两个相异压电层中与半无限界面裂纹相互作用的螺旋位错。采用复变量法和保形映射技术来解决问题。明确给出了应力和电位移强度因子。我们发现应力和电位移强度因子取决于有效的电弹性材料常数。数值算例表明,压电效应对裂纹尖端屏蔽的影响很大。

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