Abstract
In this paper, the moving least-square (MLS) method, one of the most promising meshless methods, is modified to construct whole field meshless approximation for coupled electromechanical problems. Based on this method, the crack propagation behavior and the elasto-electric fields near a crack tip in a PZT-5H piezoelectric ceramic under mechanical, electrical and mechanical-electrical mixed loads are investigated. The numerical results show that for a negative applied electric field, the hoop stress will be maximum at a certain angle other than 00 when the ratio of the electric field to tensile stress is relatively high, which makes the crack turn away from its original growth path.
| Original language | English |
|---|---|
| Pages (from-to) | 543-548 |
| Number of pages | 6 |
| Journal | Key Engineering Materials |
| Volume | 261-263 |
| Issue number | I |
| Publication status | Published - 2004 |
| Externally published | Yes |
| Event | Advances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan Duration: 20 Oct 2003 → 22 Oct 2003 |
Keywords
- Fracture mechanics
- MLS
- Meshless method
- Piezoelectric material