This paper, through analysing the causes and real situation of the ship-bridge collision incidents happened in recent years in shaoxing, provides some proposals for preventive measures and control actions.

Through the contact impact arithmetic theory of multi-body dynamics and ADAMS,the dynamic simulation of the gear mesh is specified.

The flexible robot system contact-impact dynamics is essentially a time varying, nonlinear dynamic process with variable topology, the key to solve the impact dynamics in the flexible robot system is to correctly establish the contact-impact model.

This paper is concerned with the investigation on contact/impact occuring during the firing of a vehicle-mounted howitzer and its system dynamics by nonlinear finite element method (FEM), which can provide theoretical foundation and design decision for overall design and structural design of such weapon systems.

The contact phenomenon in flexible multi-body system is common in engineering, which always make great effects to system design and analysis.