Abstract
The influence of surface effect, including surface elasticity and surface piezoelectricity, on thefracture behavior of piezoelectricmaterials with an anti-plane crack is studied.Based on the coupled surface andinterface elasticity model, the solutions to the problem are obtained by applying the singular integral method. Bycomparing the solutions influenced by the surface piezoelectricity with those affected by the surface elasticity,it is found that the influence of the surface piezoelectricity on the crack opening displacement, the crackelectric potential jump across the crack center, the crack tip stress and electric displacement intensity factorscannot be ignored. Under various electrical boundary conditions, the influence of surface piezoelectricity onthe sliding displacement, crack tip stress and electric displacement intensity factors exhibits the same tendency.Besides, the influence of surface piezoelectricity on the electric displacement intensity factor is independentof the electrical boundary conditions, which is different from the results where only the surface elasticity isconsidered.
| Original language | English |
|---|---|
| Pages (from-to) | 1445-1452 |
| Number of pages | 8 |
| Journal | Acta Mechanica |
| Volume | 227 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2016 |
| Externally published | Yes |
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