Green’s Functions of Internal Electrodes Between Two Dissimilar Piezoelectric Media
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摘要: 研究了由两个不同压电材料和一半无限长电极组成的复合材料系统的广义二维问题.基于Stroh公式,提供了当一个线力、线电荷和一个线电偶极子施加在电极端附近时,精确的Green函数解.进一步地,获得了相应的场强度系数.这些结果可作为边界元的基本解,以分析更加复杂的压电复合材料断裂问题.Abstract: The generalized 2D problem of a half-infinite interfacial electrode layer between two arbitrary piezoelectric half-spaces is studied.Based on the Stroh formalism,exact expressions for the Green's functions of a line force,a line charge and a line electric dipole applied at an arbitrary pointnear the electrode edge,were presented,respectively.The corresponding solutions for the intensity factors of fields were also obtained in an explicit form.These results can be used as the foundational solutions in boundary element method (BEM) to solve more complicated fracture problems of piezoelectric composites.
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Key words:
- piezoelectric material /
- internal electrode /
- Green.s function /
- coupled field
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