[lammps-users] special_bonds problem

Hi there,
I have experienced some difficulty in running Lammps for FENE polymer chain. My problem is special_bonds command cannot be applied as the manual says. You can check my script attached below. ‘special_bonds 0. 1.0 1.0’ & ‘special_bonds fene dihedral no’ work just fine, while the other three don’t. The system information says "LAMMPS (21 May 2008) ERROR: Illegal special_bonds command "
I really don’t know whether it is a bug or something I missed or the LAMMPS version issue.

Best Regards,
Hongjun


units lj
atom_style full
#special_bonds lj 0.0 1.0 1.0 coul 1.0 1.0 1.0 dihedral no
#special_bonds fene dihedral no
#special_bonds fene
#special_bonds 0. 1.0 1.0
#special_bonds lj/coul 0. 1.0 1.0 |

In the most current version, the syntax for special_bonds changed
slightly. See the WWW doc page and download the most
current version.

Steve