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建立含孔洞的铝分子动力学模拟模型,通过嵌入原子法,采用速度加载的分子动力学方法研究了含孔洞的铝裂纹扩展行为。并从可视化模拟软件生成的原子轨迹图观察到裂纹的变化,如裂纹尖端钝化、子裂纹的产生、孔洞的生长以及裂纹的汇集。同时说明了特殊时刻的裂纹扩展行为,且用能量演变图进一步解释和验证裂纹的扩展行为。
A simulation model of aluminum molecular dynamics with holes was established. By means of the embedded atomic method, the molecular dynamics method of velocity loading was used to study the crack propagation behavior of aluminum-containing holes. The changes of the cracks were observed from the atomistic trajectories generated by the visual simulation software, such as crack tip blunting, generation of sub-cracks, growth of holes and collection of cracks. At the same time, the crack propagation behavior at special moment is illustrated, and the energy evolution diagram is used to further explain and verify the crack propagation behavior.