High frequency scattering due to a pair of time-harmonic antiplane forces on the faces of a finite interface crack between dissimilar anisotropic materials
✍ Scribed by Ramkrishna Pramanik; Subhas Chandra Pal; Mohan Lal Ghosh
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 139 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0997-7538
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✦ Synopsis
The high-frequency elastodynamic problem involving the excitation of an interface crack of finite width lying between two dissimilar anisotropic elastic half-planes has been analyzed. The crack surface is excited by a pair of time-harmonic antiplane line sources situated at the middle of the cracked surface. The problem has first been reduced to one with the interface crack lying between two dissimilar isotropic elastic half-planes by a transformation of relevant co-ordinates and parameters. The problem has then been formulated as an extended Wiener-Hopf equation (cf. Noble, 1958) and the asymptotic solution for high-frequency has been derived. The expression for the stress intensity factor at the crack tips has been derived and the numerical results for different pairs of materials have been presented graphically.