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Singularity parametersε andκ for interface cracks in transversely isotropic piezoelectric bimaterials

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Abstract

Two parameters,ε andκ (Suoet al, 1992), are of key importance in fracture mechanics of piezoelectric material interfaces. In this paper, it is shown, for any transversely isotropic piezoelectric (TIP) bimaterial, that one of the two parametersε andκ always vanishes but the other one remains non-zero. Physically, it means that the non-oscillating crack-tip generalized stress field singularity exists for some TIP bimaterials (with vanishingε). Consequently, TIP bimaterials can be classified into two classes: one with vanishingκ performed crack tip generalized stress field oscillating singularity and the other one with vanishingε is independent from the oscillating singularity. Some numerical results forε andκ are given too.

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Authors and Affiliations

  1. State Key Laboratory of Mechanical Structural Strength and Vibration, School of Civil Engineering and Mechanics, Xi’an Jiao-Tong University, 710049, Xi’an City, P. R. China

    Z. C. Ou

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  1. Z. C. Ou
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Ou, Z.C. Singularity parametersε andκ for interface cracks in transversely isotropic piezoelectric bimaterials. Int J Fract 119, 41–46 (2003). https://doi.org/10.1023/A:1023956309624

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  • DOI: https://doi.org/10.1023/A:1023956309624

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