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lammps/examples/USER/atc/cauchy_born/in.read_xref
jzimmer a04f267b54 ATC version 2.0, date: Aug22
git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@10655 f3b2605a-c512-4ea7-a41b-209d697bcdaa
2013-08-22 23:31:13 +00:00

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# This is a test for reading an atomic reference configuration
echo both
units real
atom_style atomic
variable lattice_constant equal 5.256227487
variable c equal 4
variable L equal (${lattice_constant}*$c)
# create system
lattice fcc ${lattice_constant}
region box block 0 $c 0 $c 0 $c
boundary p p p
# the stretched configuration of the atoms
read_data read_xref_1.init
mass 1 39.95
pair_style lj/cut 13.5
pair_coeff 1 1 0.238 3.405
# define region
neighbor 1.0 bin
neigh_modify delay 1000000
thermo 1
thermo_style custom step vol etotal
timestep 0
fix ATC all atc field Ar_CauchyBorn.mat
# the original configuration of the atoms
fix_modify ATC reset_atomic_reference_positions read_xref_0.data
# "box" is the original box
fix_modify ATC mesh create 1 1 1 box f f f
fix_modify ATC fields none
fix_modify ATC fields add mass_density
fix_modify ATC output read_xrefFE 1 text
fix_modify ATC output index step
variable u1 atom x-f_ATC[1]
variable u2 atom y-f_ATC[2]
variable u3 atom z-f_ATC[3]
variable rho atom mass*f_ATC[4]
dump CONFIG all custom 1 read_xref.dmp id type x y z v_u1 v_u2 v_u3 v_rho
run 1