[lammps-users] Metal cutting simulation-reg

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1

Please post to the mail list, not to me personally.

I don't see that error message anywhere in LAMMPS.
Can you provide more details, e.g. cut/paste the
exact error message into your email post?

Steve

2

SIR,
I'M GETTING THE FOLLOWING 2 DIFFERENT TYPE OF ERRORS, WHEN I TRIED TO
RUN MY SCRIPT IN LAMMPS
(the following is copied and pasted from the log file generated).

#timestep 1.0e-9
timestep 1.0e-10
dump WP workpiece atom 10 dump.WP
dump TOOL 0degtool atom 10 dump.TOOL
dump DOC workdepth atom 10 dump.DOC
#dump 1 all atom 10 dump.mill

#run 1020
run 10e-10Setting up run ...
ERROR: Cannot use neighbor bins - box size << cutoff

3

ERROR: Cannot use neighbor bins - box size << cutoff

This error means you need to use
neighbor nsq instead of neighbor bin
in your input script. It's unusual to have
to do that. What is your pair cutoff length
and box size?

Steve

4

SIR,

MY BOX SIZE IS

Created orthogonal box = (0 0 0) to (3.614e-09 3.614e-09 3.614e-09)

REGARDING PAIR CUTOFF LENGTH, I'M USING THE EAM POTENTIAL AND IT SAYS
IT IS LISTED IN THE POTENTIAL FILE AND I'M NOT SURE WHAT IT IS.
I'M ATTACHING THE EAM FILE THAT I USED HEREWITH FOR YOUR REFERENCE.

THANKS,
VISHNU

Cu_u3.eam (35.9 KB)

5

I assume you mean 36.14 Angstroms. You are presumably
using metal units with pair_style EAM, since the EAM potential
files are in metal units. In which case the box should be
specified in Angstoms, not meters. See the units doc
page. It looks like you have set up a box that is 3.0e-9 in
size and are trying to use a potential with a cutoff of 5.
That is why the code said box << cutoff.

Steve