# This is the control script for LAMMPS. echo both log 2.1_Initialize.out #------------------------------------------------------------------------------- # Stage 2.1: Initialize LAMMPS run for 3-d periodic #------------------------------------------------------------------------------- units real boundary p p p atom_style full pair_style lj/class2/coul/long 9.5 pair_modify mix sixthpower pair_modify tail yes bond_style class2 angle_style class2 dihedral_style class2 improper_style class2 special_bonds lj 0.0 0.0 1.0 coul 0.0 0.0 1.0 box tilt large read_data structure.dat include parameters.dat neighbor 2.0 bin neigh_modify delay 0 every 1 check yes kspace_style pppm 0.00001 variable R equal 0.00198722 variable sysvol equal vol variable sysmass equal mass(all)/6.0221367e+23 variable sysdensity equal v_sysmass/v_sysvol/1.0e-24 variable coulomb equal ecoul+elong variable etotal equal etotal variable pe equal pe variable ke equal ke variable evdwl equal evdwl variable epair equal epair variable ebond equal ebond variable eangle equal eangle variable edihed equal edihed variable eimp equal eimp variable lx equal lx variable ly equal ly variable lz equal lz variable Nthermo equal 0 variable cella equal lx variable cellb equal sqrt(ly*ly+xy*xy) variable cellc equal sqrt(lz*lz+xz*xz+yz*yz) variable cellalpha equal acos((xy*xz+ly*yz)/(v_cellb*v_cellc)) variable cellbeta equal acos(xz/v_cellc) variable cellgamma equal acos(xy/v_cellb) variable p equal press variable pxx equal pxx variable pyy equal pyy variable pzz equal pzz variable pyz equal pyz variable pxz equal pxz variable pxy equal pxy variable sxx equal -pxx variable syy equal -pyy variable szz equal -pzz variable syz equal -pyz variable sxz equal -pxz variable sxy equal -pxy variable fmax equal fmax variable fnorm equal fnorm variable time equal step*dt+0.000001 variable surfacetension equal 0.5*v_lz*(0.5*(v_sxx+v_syy)-v_szz) thermo_style custom step v_time press vol v_sysdensity temp ebond eangle edihed eimp evdwl ecoul etail elong pe ke thermo_modify flush yes # # Set up the fixed and movable groups # group movable union all group fixed subtract all movable compute sum_f1 movable reduce sum fx fy fz variable sum_fx equal c_sum_f1[1] variable sum_fy equal c_sum_f1[2] variable sum_fz equal c_sum_f1[3] log 2.2_Minimization.out #------------------------------------------------------------------------------- # Stage 2.2: Minimization #------------------------------------------------------------------------------- min_style cg min_modify dmax 0.05 line fast reset_timestep 0 thermo_style custom step fmax fnorm press vol v_sysdensity v_sxx v_syy v_szz v_syz v_sxz v_sxy pe v_cella v_cellb v_cellc v_cellalpha v_cellbeta v_cellgamma v_sum_fx v_sum_fy v_sum_fz dump sci all custom 1000 2.2.xyz id mol type q xs ys zs thermo 100 minimize 0.0 1.0 1000 10000 undump sci log 2.3_Minimization.out #------------------------------------------------------------------------------- # Stage 2.3: Minimization #------------------------------------------------------------------------------- min_style cg min_modify dmax 0.05 line fast reset_timestep 0 thermo_style custom step fmax fnorm press vol v_sysdensity v_sxx v_syy v_szz v_syz v_sxz v_sxy pe v_cella v_cellb v_cellc v_cellalpha v_cellbeta v_cellgamma v_sum_fx v_sum_fy v_sum_fz fix 2_3_1 all box/relax x 0.987 y 0.987 z 0.987 couple none vmax 0.01 dilate all dump sci all custom 1000 2.3.xyz id mol type q xs ys zs thermo 100 minimize 0.0 1.0 1000 10000 undump sci unfix 2_3_1