  Argon molecular dynamics (MD) simulations are performed with a newly
developed MD program, Easy M(1)odular M(2)olecular M(3)echanics (EM3). The
program was developed in an object-oriented fashion containing classes for each
critical part of a functioning MD program. An organizational scheme for a
general molecular mechanics program is therefore presented, along with the
framework of the EM3 program. With the modular nature and open-source
availability, EM3 can serve as a learning tool for newcomers to molecular
simulations and code organization via object-oriented programming. Validations
of the code are presented in comparison with Monte Carlo (MC) simulations of
liquid argon at different densities and temperatures. A calculation of the
self-diffusion coefficient for liquid argon is also performed, exhibiting the
extendibility of EM3. This report comes packaged with the EM3 source code and
examples, located at https://github.com/rohskopf/em3.
