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最近在研究lammps优化分子晶体的晶胞,但是在优化结束后发现分子断键,分裂成原子核一些片段,下面是优化的命令:units real
newton on
dimension 3
boundary p p p
atom_style charge
read_data expand.data
mass 1 1.00794 # H
mass 2 12.0107 # C
pair_style reax/c NULL
pair_coeff * * ffield.reax C H
neigh_modify every 1 delay 0 check yes
fix 1 all qeq/reax 1 0.0 10.0 1.0e-6 reax/c
min_style cg
minimize 1.0e-8 1.0e-8 15000 30000
dump 1 all xyz 100 out1.xyz
dump_modify 1 append yes
timestep 0.05
velocity all create 300 12345
fix 2 all npt temp 20.0 5.0 10.0 aniso 1.0 1.0 1000.0
run 10000
reset_timestep 0
min_style cg
dump 2 all xyz 100 out2.xyz
minimize 1.0e-8 1.0e-8 30000 30000
求大神们指点,为何会出现这种情况?如何改正?跪谢!!!!
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1.png
(180.56 KB, 下载次数 Times of downloads: 18)
初始结构
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2.png
(186.91 KB, 下载次数 Times of downloads: 10)
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expand.data
3.25 KB, 下载次数 Times of downloads: 1
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