建立了一个模拟位错斑图形成的元胞自动机--分子动力学模型. 该模型考虑了在相同或不同滑移面上具有相反Burgers矢量方向的刃型位错间的长程与短程相互作用, 采用分子动力学方法处理长程相互作用, 采用元胞自动机方法处理短程相互作用. 应用这个模型, 模拟了在没有外加应力和存在外加循环应力条件下的Cu单晶的位错结构.
A model to describe dislocation patterns based on cellular automaton and molecular dynamics is presented, which takes into account the short—range interaction and long--range interaction between edge dislocations with opposite Burger's vectors on the same glide plane or the different glide planes. This model uses molecular dynamics to deal with long--range interaction, and cellular automaton to describe the short--range interaction. Using the model, the dislocation structures of single crystal Cu are simulated under no external stress and applied cyclic stress.
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