[lammps-users] fix deform and displace_box

I am trying to change the volume. While 'fix deform' works perfectly
fine, displace_box gives "FENE bond too long" error. If the system was
not properly equilibrated, shouldn't it give the same error with 'fix
deform command?

Also, when I am using 6000 atoms, it does the job correctly, but 2400
atoms does not change the volume at all. Any help?


Fix deform changes the volume gradually, during a run.
Displace box changes it instantly, when you issue
the command. So they aren't the same.