Science and Education Publishing American Journal of Mechanical Engineering 1 7 2013 11 12 Modeling of Dynamic Systems in Simulation Environment MATLAB/Simulink – SimMechanics 282 288 EN Peter Frankovsky Department of Applied Mechanics and Mechatronics, Faculty of Mechanical Engineering, Technical University of Košice, Košice, Slovakia Darina Hroncová Ingrid Delyová Ivan Virgala AJME20131726 10.12691/ajme-1-7-26 2013 10 04 2013 10 10 2013 11 12 The work shows the use of SimMechanics program for modeling of mechanical systems. The presented paper aims to determination the responses of the mechanical vibrating system through non-homogeneous linear differential equation of second order with constant coefficients using MATLAB/Simulink and SimMechanics. SimMechanics formulates and solves the equations of motion of mechanical system.