Discrete Element Simulation for Metals

I'm seeking a professional to conduct a discrete element simulation in LIGGGHTS primarily aimed at analyzing the behavior of particles under the external force. Necessary files and extension will be avoided to help the freelancers. The freelancer will have to replicate results from a published paper.
The ideal freelancer for this project should have a strong background and experience with discrete element simulations. Proficiency in simulating metal behaviors specifically is highly desirable.