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Meccanica

, Volume 49, Issue 2, pp 493–502 | Cite as

Elastic interaction between edge dislocation, concentrated force, point heat source and edge crack in a semi-infinite plane

  • Jia Li
  • QiHong Fang
  • YouWen Liu
Article

Abstract

We investigate the interaction between edge crack and edge dislocation as well as concentrated force and point heat source. The stress intensity factors at the edge crack tip and the image forces acting on the edge dislocation are calculated. The influence of the concentrated force, point heat source and edge dislocation on the shielding and anti-shielding effects to edge crack as well as the glide and climb forces acting on the edge dislocation is examined in detail. The results indicate that the shielding and anti-shielding effects increase acutely with the increment of concentrated force and point heat source. In addition, the glide and climb forces increase acutely with the decrement of the distance between dislocation and crack tip.

Keywords

Edge dislocation Concentrated force Point heat source Edge crack Shielding effect Image force 

Notes

Acknowledgements

The authors would like to deeply appreciate the support from the NNSFC (11172094 and 11172095) and the NCET-11-0122. This work was also supported by Hunan Provincial Natural Science Foundation for Creative Research Groups of China (Grant No. 12JJ7001).

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangshaP.R. China
  2. 2.College of Mechanical and Vehicle EngineeringHunan UniversityChangshaP.R. China

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