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18717718552新蟲 (小有名氣)
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[求助]
分子動(dòng)力學(xué)納米壓痕模擬數(shù)據(jù)處理問題 已有1人參與
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這是我用來做納米壓痕的in文件 運(yùn)行沒有問題 但是數(shù)據(jù)處理的時(shí)候發(fā)現(xiàn) 位移增大 載荷反而減小 大神們幫忙看下是什么原因 echo both #creates matrix units metal boundary p p s atom_style atomic dimension 3 read_data 550ns0.1v823k.data1 mass 1 55.845 mass 2 63.546 mass 3 58.6934 timestep 0.002 pair_style eam/alloy pair_coeff * * FeCuNi.eam.alloy Fe Cu Ni #Energy minimization minimize 1.0e-3 1.0e-6 1000 1000 #define groups region reg block INF INF INF INF INF INF units box group reg region reg region reg1 block 9 90.282 9 90.282 9 50 units box group reg1 region reg1 region newton_layer block 20 79.282 20 79.282 20 100.282 units box group newton_layer region newton_layer group thermostat_layer subtract reg1 newton_layer group boundary_layer subtract reg reg1 dump 1 all atom 1000 dump123.lammpstrj log log123.data #intial velocities compute newtemp thermostat_layer temp velocity thermostat_layer create 300 8728007 temp newtemp #fix fix 1 boundary_layer setforce 0.0 0.0 0.0 #固定邊界層 fix 2 thermostat_layer nvt temp 300.0 300.0 0.05 # 恒溫層溫度設(shè)置 #assigning velocity to the indenter in z direction loading variable z equal "101.282-step*dt*0.05" #0.05 loading rate print "z is $z" #indenter position and radius at onset of loading fix 3 newton_layer indent 1000.0 sphere 50 50 v_z 30.0 units box thermo 100 thermo_style custom step temp c_newtemp f_3[1] f_3[2] f_3[3] run 80000 |
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