Wen-Ping Wu1,2, Zong-Zhuan Yao3
CMES-Computer Modeling in Engineering & Sciences, Vol.93, No.4, pp. 235-252, 2013, DOI:10.3970/cmes.2013.093.235
Abstract The internal microstructure evolution and atomic stress distribution around the crack tip of a pre-cracked single crystal nickel with unequal sample sizes are studied by molecular dynamics (MD) simulation. The simulated results indicate that the crack propagation dynamics and stress distributions around the crack tip are strongly dependent on the microstructure evolution caused by the change of sample size. Unequal sample sizes induce various atomic configurations around the crack tip during the crack propagation. When atomic configuration is invariable around the crack tip, the crack grows rapidly along the crack path, the stress concentration occurs… More >
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