Abstract
The purpose of this present work is to study the arc-shaped interfacial cracking problem in a hollow cylinder that consists of an inner orthotropic dielectric layer and an outer functionally graded piezoelectric layer. Based on the method of variable separation, the problem is reduced to a Cauchy singular integral equation, which is solved by the Lobatto-Chebyshev quadrature technique. Numerical results of the stress intensity factor are obtained and the effects of geometrical and physical quantities on the fracture parameter are surveyed in details.
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Acknowledgements
The work was supported by National Natural Science Foundations of China (10962008; 51061015) and Research Fund for the Doctoral Program of Higher Education of China (20116401110002).
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Appendix
Appendix
For the case of open-circuit condition, Q k (n) (k=1,2,…5) are
For the case of short-circuit condition, Q k (n) (k=1,2,…5) are
For both the open-circuit and short-circuit conditions, Q 6(n),Q 7(n) and q are
where \(\gamma= \sqrt{\beta^{2} + 4n^{2}}\), \(k_{2} = e_{150}^{(2)}/\sqrt{c_{440}^{(2)}\varepsilon_{110}^{(2)}}\) is the dimensionless piezoelectric stiffening coefficient.
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Shi, P., Sun, S. & Li, X. Arc-shaped interfacial crack in a non-homogeneous electro-elastic hollow cylinder with orthotropic dielectric layer. Meccanica 48, 415–426 (2013). https://doi.org/10.1007/s11012-012-9610-x
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DOI: https://doi.org/10.1007/s11012-012-9610-x