Query regarding 'atom_style' for a system consist of finite size particles in bead-spring polymers

Dear Users,
I am simulating a system consist of polymers and particles. As per Lammps
documentation, atom_style 'bond' defines the point particle. So If I use
atom_style 'bond' for this system, How can I change the size of particle
in future?
In LAMMPS documentation it is specified that atom_style 'bond' is used to
describe bead-spring polymers. So how can I change the size of the
particles in this case?

Please provide me some suggestions..

Thanks in Advance

-Praveen

1 Like

Dear Users,
I am simulating a system consist of polymers and particles. As per Lammps
documentation, atom_style 'bond' defines the point particle. So If I use
atom_style 'bond' for this system, How can I change the size of particle
in future?

how the "size" of particles is represented depends on the specific
choice of potential you use.

In LAMMPS documentation it is specified that atom_style 'bond' is used to
describe bead-spring polymers. So how can I change the size of the
particles in this case?

see above. please note, that while the statement about the atom style
says, that bead-spring polymers is a typical use case, it does not
mean, that this particular atom style is the only choice for
simulating this case.

axel.

Specifically for bead/spring models the size
of the monomer is the sigma in the LJ potential,
and also in the bond FENE potential (commonly
used for simple linear-chain bead/spring models).

Steve

1 Like