Near-tip out of plane displacement fields for dynamic crack propagation in functionally graded materials
✍ Scribed by Venkitanarayanan Parameswaran; Arun Shukla
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 208 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0093-6413
No coin nor oath required. For personal study only.
✦ Synopsis
Asymptotic expansion for the out of plane displacement field around a crack propagating along the gradient in a functionally graded material is developed. The irregular behavior of one of the terms in the expansion at low crack speeds is further examined and a remedial solution, which is well behaved at low crack speeds, is proposed. The developed out of plane displacement field is used to estimate stress intensity factor from quasi-static finite element solution. The results indicate that inclusion of the proposed nonhomogeneity specific terms gives estimates of stress intensity factor, which are consistent with existing analytical predictions.