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Stoudemire29

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[交流] 裂纹扩展

各位,相信你们都大概看过Lammps里的crack文件,但是Lampps里的变形命令有多种,比如deform,velocity,set force,我采用在初始立方结构里选择一个矩形删除其中原子,预制裂纹,然后应该是让裂纹扩展,是否还需固定边界?还是直接采用P P P,不定义边界? 是对整个盒子施加拉伸还是对裂纹上端的局部原子施加拉伸?用哪个拉伸命令呢?请大神详解
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