Influence of Hole Size on Crack Propagation Mechanism of Nano-Single Crystal Copper

Abstract:

By molecular dynamics method, the tensile processes of nanosingle crystal copper with the crack front existence hole were simulated, and the effect of different hole size on crack propagation mechanism was analyzed. The results indicate that as the hole position remain unchanged, the hole diameter was more bigger, the atomic staggered and the crack tip deactivation were more obvious under tensile loads caused more dislocation glide appeared, meanwhile the number of slide-line was more and the trend of crack branch extend to hole position was more obvious.

• Periodical: Applied Mechanics and Materials (Volume 328)
• Pages: 679-683
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.328.679
• Online since: June 2013
• Authors: Ge Li, Xian Qin Hou, Zhi Min Liu
• Keywords: Crack Propagation Mechanism, Holes, Molecular Dynamic (MD)

References

[1] Z.P. Han, L.Yuan and D.B. Dan: Journal of Harbin Institute of technology, Vol.38 (2006) No.10, p.1677

[2] Q.Wan, X.G. Tian and Y.P. Shen: Acta Mechanica Solida Sinica, Vol.25 (2004) No.3, p.345

[3] X.J. Wang, B.Q. Zhu and H.M. Wang: Journal of System Simulation, Vol.25 (2003) No.10, p.534

[4] D.Huang, W.M. Tao and Y.M. Guo: Computational Mechanics SINCA, Vol.23 (2006) No.5, p.559

[5] L.X. Cao and C.Y. Wang: Physics Sinica, Vol. 56(2007) No.1, p.413

[6] Y.F. Guo and S.W. Gao: Journal of Beijing Jiaotong University Vol.29 (2005) No.4, p.5