[lammps-users] Error in Bond-definition

Hi,

I'm a new LAMMPS user. I'm trying to run a script for geometrical relaxation of CNT under some constraints using Tersoff potential. In the read_data file, I specified the bonds as well the bond_coeff parameters. But when I execute the script, I get the error message - "Bonds defined but no bond types".

Can anyone please guide me what additional specifications do I have to make for complete "Bond" description in the script.

Thank you.
alpha21

Hi,

I'm a new LAMMPS user. I'm trying to run a script for geometrical relaxation of CNT under some constraints using Tersoff potential. In the read_data file, I specified the bonds as well the bond_coeff parameters. But when I execute the script, I get the error message - "Bonds defined but no bond types".

that means your data file is not consistent.

Can anyone please guide me what additional specifications do I have to make for complete "Bond" description in the script.

you must not define bonds with a tersoff potential. they are implicit
with the potential.

cheers,
    axel.