Numerical and experimental analyses of singular electro-elastic fields around a V-shaped notch tip in piezoelectric materials
✍ Scribed by Meng-Cheng Chen; Xue-Cheng Ping; Hui-Min Xie; Zhan-Wei Liu
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 672 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
A super V-shaped notch tip element that simulates electro-elastic behavior near a V-shaped notch tip is first developed based on one-dimensional finite element eigensolutions. The present element is then incorporated with standard four-node hybrid electro-elastic field elements to calculate electro-elastic singularity orders, singular strain distributions and generalized stress intensity factors ahead of V-shaped notch tips in three-point-bending piezoelectric specimens with notch angles a = 0°, 30°, 60°and 90°, respectively. The present numerical solutions are compared with those obtained from the moiré interferometry experiment technique. Finally, the effect of the V-shaped notch angle and electric field on singular electro-elastic fields is also discussed.