13th International Conference on Fracture June 16–21, 2013, Beijing, China -8- cases and we obtained a plot as Figure 11. It is obvious that the variation or fluctuation is rather slight and implies that the simulation resutls have a good consistency. On the other hand it also supplys the used simulation model and parameters are appropriate. In addition, it illustrates that temperature has a weaker influence on RDF curve fluctuation than the crack growth process. Figure 8. Crack propagation processes for Time t=5,10 and 15 ns,Temperature T= 100 ~1200 K Figure 9. Crack growth process at 300 K with incremental load cycles N=10~16 Figure 10. Crack growth process at 900 K with incremental load cycles N=10,15,20 Figure 11. Number density integration curves The RDF curves correspond to crack growth at 200 K,300 K,500 K,700 K,900 K and 1100K are illustrated in Figure 12. It shows that the RDF curve reduces with increasing temperature. The changing patterns of maximum value or peak of RDF are plotted in Figure 13. All the curves have the same fixed oscillating modes but with different amplitude peak values. Only during the later stage of crack growth, there are a little phase shift. It is the results of large material plastic
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