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MECHANICAL BEHAVIOR OF FCC CRYSTAL SIMULATED BY 3-D DISCRETE DISLOCATION DYNAMICS 被引量:1

MECHANICAL BEHAVIOR OF FCC CRYSTAL SIMULATED BY 3-D DISCRETE DISLOCATION DYNAMICS
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摘要 To simulate the mechanical behavior of the FCC crystal with the lower Peierls stress, the stiff property and physical meaning of the differential equation group consisting of dislocation evolution and mechanical state was investigated based on the 3-D discrete dislocation dynamics; the results indicate that the differential equation group is serious stiff, namely the external stress changes more quickly than dislocation evolution. Using the established numerical algorithm, the mechanical behavior of FCC crystal was simulated with the dislocations located in the parallel slip planes, and the effect of strain rate on the dislocation configuration and mechanical behavior, and the sat- uration process of mobile dislocation were discussed. The simulation results indicate that the numerical algorithm can efficiently simulate the dislocation dipole and the low strain rate loading. To simulate the mechanical behavior of the FCC crystal with the lower Peierls stress, the stiff property and physical meaning of the differential equation group consisting of dislocation evolution and mechanical state was investigated based on the 3-D discrete dislocation dynamics; the results indicate that the differential equation group is serious stiff, namely the external stress changes more quickly than dislocation evolution. Using the established numerical algorithm, the mechanical behavior of FCC crystal was simulated with the dislocations located in the parallel slip planes, and the effect of strain rate on the dislocation configuration and mechanical behavior, and the sat- uration process of mobile dislocation were discussed. The simulation results indicate that the numerical algorithm can efficiently simulate the dislocation dipole and the low strain rate loading.
出处 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2008年第2期94-102,共9页 金属学报(英文版)
关键词 FCC crystal Mechanical behavior Dislocation dynamics Nu-merical simulation FCC crystal Mechanical behavior Dislocation dynamics Nu-merical simulation
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  • 1L.P. Kubin,B. Devincre,M. Tang.Mesoscopic modelling and simulation of plasticity in fcc and bcc crystals: Dislocation intersections and mobility[J].Journal of Computer - Aided Materials Design.1998(1)
  • 2L.P.Kubin,B.Devincre,and M.Tang. J.Comp.Aided Mater.Design . 1998
  • 3M.Tang,L.P.Kubin,and G.R.Canova. Acta Materialia . 1998
  • 4A.Moulin,M.Condat,and L.P.Kubin. Acta Materialia . 1999
  • 5B.Devincre,L.P.Kubin,C.Lemarchand,and R.Madec. Mater.Sei.Eng.A . 2001
  • 6G.Monnet,B.Devincre,and L.P.Kubin. Acta Materialia . 2004
  • 7H.M.Zbib,M.Rhee,and J.P.Hirth. International Journal of Mechanical Sciences . 1998
  • 8M.Rhee,H.M.Zbib,J.P.Hirth,H.Huang,and T.D.Rubia. Model.Simul.Mater.Eng . 1998
  • 9H.M.Zbib,T.D.Rabia,M.Rhee,and J.P.Hirth. J.Nucl.Mater . 2000
  • 10H.M.Zbib,and T.D.Rubia. Int.J.Plast . 2002

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