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Myprayert

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######################################
# Input file for dislocation nucleation in single crystal Al
# Mark Tschopp, July 2010
# lmp_exe < Al_SC_100.in
######################################

######################################
# INITIALIZATION
units                 metal
dimension                3
boundary                p        p        p
atom_style                atomic

######################################
# ATOM BUILD
lattice                fcc 4.05
region                whole block 0 10 0 10 0 10
create_box                1 whole

region                sc block INF INF INF INF INF INF units box
lattice                 fcc 4.05 orient x 1 0 0 orient y 0 1 0 orient z 0 0 1
create_atoms        1 region sc

variable natoms equal "count(all)"
print "# of atoms are: ${natoms}"

######################################
# INTERATOMIC POTENTIAL
pair_style        eam/alloy
pair_coeff        * * Al99.eam.alloy Al

# Define computes required
compute csym all centro/atom

######################################
# EQUILIBRATION
reset_timestep        0
timestep 0.001
velocity all create 300 12345 mom yes rot no
fix 1 all npt 300 300 1 xyz 0 0 1 drag 1

# Set thermo output
thermo 100
thermo_style custom step lx ly lz press pxx pyy pzz pe temp

# Run for at least 10 picosecond (assuming 1 fs timestep)
run 10000
unfix 1

# Store final cell length for strain calculations
variable tmp equal "lx"
variable L0 equal ${tmp}
print "Initial Length, L0: ${L0}"

######################################
# DEFORMATION
reset_timestep        0

fix                1 all npt 300 300 1 aniso NULL NULL 0 0 0 0 1 drag 1
variable srate equal 1.0e9
variable srate1 equal "v_srate / 1.0e12"
fix                2 all deform 1 x erate ${srate1} units box remap x

# Output strain and stress info to file
# for units metal, pressure is in [bars] = 100 [kPa] = 1/10000 [GPa]
# p2, p3, p4 are in GPa
variable strain equal "(lx - v_L0)/v_L0"
variable p1 equal "v_strain"
variable p2 equal "-pxx/10000"
variable p3 equal "-pyy/10000"
variable p4 equal "-pzz/10000"
fix def1 all print 100 "${p1} ${p2} ${p3} ${p4}" file Al_SC_100.def1.txt screen no

# Dump coordinates to file (for void size calculations)
dump                 1 all custom 2500 dump.* x y z c_csym

# Display thermo
thermo         100
thermo_style        custom step v_strain temp v_p2 v_p3 v_p4 ke pe press

run                150000

######################################
# SIMULATION DONE
print "All done"
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Myprayert

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cl1994861

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ÒýÓûØÌû:
3Â¥: Originally posted by Myprayert at 2017-11-29 19:26:32
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Myprayert

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4Â¥: Originally posted by jluchemlib at 2017-11-30 08:45:13
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Myprayert

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5Â¥: Originally posted by cl1994861 at 2017-11-30 09:07:18
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