The multibody system dynamics is to establish mathematical model suitable for computer program to solve the kinematics and dynamics analysis, and seek the efficient and stable numerical method, its fundamental purpose is computer application technology for dynamic analysis and simulation of complex mechanical system.
Through the computer to solve the multibody system dynamics problems, engineers the main work only need to according to the reality of the situation build suitable dynamics model, and submit to the computer solution. Moreover, the computer can also provide the results analysis, the extremely difficult complex mechanical problems which cannot even solve can now use computer calculation function to facilitate the solution.
In the early days, the multi-body system dynamics is only applicable to the aviation machinery and robot, and now, with the continuous deepening of its theory, multibody system dynamics has a wide range of applications in the ship mechanical design. Below, we first briefly introduce the basic theory of multi-body system dynamics, and then focus on the application of multi-body system dynamics in the ship mechanical design.