Abstract
We establish design criteria which guarantee uniformity of stresses inside a coated non-elliptical inhomogeneity influenced by the presence of a finite mode III crack in a matrix subjected to uniform remote anti-plane shear stresses. We employ a particular conformal mapping function containing an unknown real density function which is obtained via the numerical solution of an associated Cauchy singular integral equation with the aid of the Gauss–Chebyshev integration formula. Interestingly, in contrast to the (non-elliptical) shape of the coated inhomogeneity which is influenced solely by the presence of the nearby crack, the resulting internal uniform stress field remains unaffected by the crack.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (Grant No. 11272121) and through a Discovery Grant from the Natural Sciences and Engineering Research Council of Canada (Grant No. RGPIN—2017-03716115112).
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Wang, X., Chen, L. & Schiavone, P. Achieving a uniform stress field in a coated non-elliptical inhomogeneity in the presence of a mode III crack. Z. Angew. Math. Phys. 69, 138 (2018). https://doi.org/10.1007/s00033-018-1032-8
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DOI: https://doi.org/10.1007/s00033-018-1032-8
Keywords
- Coated inhomogeneity
- Mode III crack
- Uniform stress field
- Anti-plane elasticity
- Conformal mapping
- Cauchy singular integral equation