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

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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.

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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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Authors and Affiliations

  1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan Province, 410082, P.R. China

    Jia Li, QiHong Fang & YouWen Liu

  2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan Province, 410082, P.R. China

    Jia Li, QiHong Fang & YouWen Liu

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  1. Jia Li
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  2. QiHong Fang
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  3. YouWen Liu
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Correspondence to YouWen Liu.

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Li, J., Fang, Q. & Liu, Y. Elastic interaction between edge dislocation, concentrated force, point heat source and edge crack in a semi-infinite plane. Meccanica 49, 493–502 (2014). https://doi.org/10.1007/s11012-013-9807-7

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  • DOI: https://doi.org/10.1007/s11012-013-9807-7

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