Multibody mechanical systems represent a wide spectrum of practical applications from industrial robots to many mechanisms (connecting rod-crank, automotive suspension, wiper, catenary, etc.). The course presents and implement the general methods of description, modelling and analysis of multibody mechanical systems, as well as the the tools for the design and synthesis of these systems. During the design office activities, the behavior of an industrial robot and an automotive wiper system are fully simulated and visualised.