Some questions about the simulation of the Dynamic Response under harmonic excitation in metallic material.

Dear Prof. Plimpton

I am going to simulate the Dynamic Response under harmonic excitation in metallic material. However, I have some questions needing your help:

  1. Is LAMMPS valid for such simulation?

  2. Is EAM potential suitable to describe the interatomic force in such problem?

  3. Can you recommend me some LAMMPS Commands to apply harmonic excitation?

Thanks.

Sincerely yours,

H. Wei

I think this was answered a couple weeks back,
but maybe not.

"dynamic response" is too fuzzy a question for
a good answer. But LAMMPS can run
an EAM model which is generally good for
fcc metals. If you run standard NVE dynamics
at a low temperature (well below melting) then
atoms will simply vibrate around their lattice
sites, which is effectively harmonic motion.

You can dump trajectories and do post analysis
for "dynamic response" I suppose.

Steve