natural frequency

Hi all
I’m a new user.I want to get natural frequency of graphene sheet so generating coordinates of carbon atom in the first mode shape and I want to freely vibrate deform graphene sheet but I dont know how can I do this?which fix may I use to vibrate this sheet?

Hi all
I'm a new user.

new to LAMMPS or new to MD?

I want to get natural frequency of graphene sheet so
generating coordinates of carbon atom in the first mode shape and I want to
freely vibrate deform graphene sheet but I dont know how can I do this?which
fix may I use to vibrate this sheet?

why not simply compute the vibrational density of states?