Dynamic Anti-Plane Behaviors of a Semi-Infinite Piezoelectric Medium with a Circular Cavity and a Crack near the Surface

Tian Shu Song; Dong Li; Xin Wang Wang; Sheng Li Dong

doi:10.4028/www.scientific.net/KEM.385-387.389

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 385-387Dynamic Anti-Plane Behaviors of a Semi-Infinite...

Dynamic Anti-Plane Behaviors of a Semi-Infinite Piezoelectric Medium with a Circular Cavity and a Crack near the Surface

Abstract:

Dynamic interaction is investigated theoretically between a circular cavity and a crack near the surface in a semi-infinite piezoelectric medium subjected to time-harmonic incident anti-plane shearing in this paper. The formulations are based on the method of complex variable and Green’s function. Dynamic stress concentration factors at the edge of the circular cavity and dynamic stress intensity factors at the crack tip are obtained by solving boundary value problems with the method of orthogonal function expansion. The calculating results are plotted to show how the frequencies and the orientation of incident wave, piezoelectric characteristic parameters of the material and the structural geometries influence upon the dynamic stress concentration factor (DSCF) and dynamic stress intensity factor (DSIF).

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Periodical:

Key Engineering Materials (Volumes 385-387)

Pages:

389-392

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.385-387.389

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Online since:

July 2008

Authors:

Tian Shu Song, Dong Li, Xin Wang Wang, Sheng Li Dong

Keywords:

Dynamic Stress Concentration Factor (DSCF), Dynamic Stress Intensity Factor (DSIF), Green's Function, Interacting Crack and Circular Cavity near the Surface, Semi-Infinite Piezoelectric Medium

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References

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