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Acta Mechanica

, Volume 229, Issue 10, pp 4251–4266 | Cite as

Surface effects on an electrically permeable elliptical nano-hole or nano-crack in piezoelectric materials under anti-plane shear

  • Junhong Guo
  • Xiaofei Li
Original Paper
  • 78 Downloads

Abstract

An electrically permeable elliptical nano-hole or nano-crack embedded in an infinite piezoelectric material with surface effect is investigated based on the Gurtin–Murdoch surface/interface model, which is subjected to far-field anti-plane mechanical and in-plane electrical loads. The electric field inside the elliptical nano-hole has been taken into consideration, and exact electroelastic fields near the elliptical nano-hole are obtained by using the technique of conformal mapping. The size-dependent stress and electric displacement intensity factors at the crack tip are derived exactly for both electrically permeable and impermeable boundary conditions when the elliptical nano-hole reduces to the nano-crack. Numerical examples are illustrated to show the surface effects on the stress and electric displacement intensity factors of electrically permeable and impermeable cracks, and on the stress and electric field concentrations around the electrically permeable and impermeable holes. The results indicate that the size dependence of an electrically permeable nano-hole or nano-crack is entirely different from that of the electrically impermeable case.

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Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 11502123, 11262012) and the Natural Science Foundation of Inner Mongolia Autonomous Region of China (Grant No. 2015JQ01).

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of ScienceInner Mongolia University of TechnologyHohhotChina

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