Elastic behaviour of a wedge disclination dipole near a sharp crack emanating from a semi-elliptical blunt crack |
| |
Authors: | Song Hao-Peng Fang Qi-Hong and Liu You-Wen |
| |
Institution: | College of Mechanics and Aerospace, Hunan University, Changsha 410082, China |
| |
Abstract: | The interaction between a wedge disclination dipole and a
crack emanating from a semi-elliptic hole is investigated. Utilising
the complex variable method, the closed form solutions are derived
for complex potentials and stress fields. The stress intensity
factor at the tip of the crack and the image force acting on the
disclination dipole center are also calculated. The influence of the
morphology of the blunt crack and the position of the disclination
dipole on the shielding effect to the crack and the image force is
examined in detail. The results indicate that the shielding or
anti-shielding effect to the stress intensity factor increases when
the wedge disclination dipole approaches the tip of the crack. The
effects of the morphology of the blunt crack on the stress intensity
factor of the crack and the image force are very significant. |
| |
Keywords: | wedge disclination dipole blunt crack shielding
effect image force |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |