  This research presents a model of a complex dynamic object running on a
multi-core system. Discretization and numerical integration for multibody
models of vehicle rail elements in the vertical longitudinal plane fluctuations
is considered. The implemented model and solution of the motion differential
equations allow estimating the basic processes occurring in the system with
various external influences. Hence the developed programming model can be used
for performing analysis and comparing new vehicle designs.
  Keywords-dynamic model; multi-core system; SMP system; rolling stock.
