NUMERICAL SIMULATION OF CRACK PROPAGATION AND DEFORMATION MECHANISM AROUND CRACK TIP ACROSS ATOMISTIC/MESO/CONTINUUM SCALES

摘要：

In this paper,an across scale numerical imdel with five regions is proposed to simulate the deformation around crack tip and the crack extension at atomic scale,which carry out the coupling transmission of mechanical parameters among 5 different scales for single side crack of u iron.Under macro-scale loading,the processes of deformation near crack tip arid crack propagation were simulated.The crack propagation and deformation mechanisms included dislocation and phase transfer were described in discrete atomic region and the crack fork was observed.The special displacement connection method named as the piecewise linear fitting was proposed to carry out the transition of mechanical parameter both in discrete atomistic region and continuous media.

关键词： Crack propagation deformation mechanism across scale model molecular dynamics Finite Element

作者: H.Y.Chen X.G.Zeng J.H.Fan

作者单位: College of Architecture and Environment, Sichuan University,Chengdu,Sichuan 610065,P.R.China College of Engineering,Alfred University,NY14802-1205,USA

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 367-372

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）