摘要
采用分子动力学模拟相同的孔洞总尺寸不同等间距孔洞的数量对多孔铝演变行为的影响。结果表明:在孔洞形状尺寸相同的情况下,随着等间距孔洞数量的增多,导致体系被拉开时间缩短,体系更容易被拉开;含孔洞的体系在加载过程中孔洞演变行为(裂纹尖端无序→尖端钝化→晶格畸变→母裂纹产生子裂纹)中的持续时间越来越短、波动次数越来越小。
The effect of the number of different spaced voids but the same overall size on the evolution behavior of porous aluminum is studied by molecular dynamics simulation. The results show that on the state of same void shape size, with the increase of the number of the equality spaced voids, the time for the system to be stretched is shortened. And The time required in the evolution behavior （ crack tip disorder-tip bluntness-lattice distortion-mother crack generation sub-crack） of the porous aluminum system is shortened during the process of loading,and the number of fluctuations is less and less.
出处
《失效分析与预防》
2017年第5期269-272,298,共5页
Failure Analysis and Prevention
基金
江西省自然科学基金(2010GC0803)
江西省教育厅科学前沿项目(KJLD12073)
关键词
演变行为
分子动力学模拟
多孔铝
evolution behavior
molecular dynamics simulation
porous aluminum
