Virtual Prototype Analysis Of A Ship-borne Device

The development and application of the computers and related technology provides a practical way for virtual prototype mechanical system. Virtual prototyping technology can solve many difficult issues such as the design, manufacture and use of mechanical system. And they provide important analysis methods for ensuring the accuracy and reliability of mechanical systems. Virtual prototyping technology is widely used in mechanical system design and analysis.This thesis mainly studies on a ship-borne device. It uses multi-body dynamics theory, 3-D modeling software and multi-body system dynamics simulation software, establishes a rigid virtual prototype model for the ship-borne device. This thesis analyzes a ship-borne device's parameter in different sea-conditions and different working environments. The ship-borne device characteristics and dynamic parameters of movement for further analysis of the orbit provides a stress-strain data, as well as amendments ship-borne devices and improving the design of a basis. Though the multi-body dynamics analysis of ship-borne devices, we obtain the contact forces of main interfaces. Using the contact forces as input, we obtain the orbits'stress-strain though finite element static structural analysis. According to orbits'deformation, we propose to increase the horizontal wheel, reducing horizontal deformation of the orbits for security.In order to get more accurately result, the paper using flexible multi-body dynamics theory, the use of multi-body dynamics simulation software for flexible analysis. Through modal neutral document we can replace the rigid body for flexible body. We make the flexible model of horizontal wheel support plates and establish the ship rigid-flexible coupling device virtual prototype model. After taking ship five rolling for example, comparing the simulation results of rigid model with rigid-flexible coupling model, we get the proposal that adjust the clearance of the gear and rack.The analysis show that, for complex devices, particularly as this can not be involved in the physical prototype testing agencies, must adopt virtual prototyping technology and to establish a virtual prototype model for virtual simulation analysis. For some flexible parts, they must be flexible and establish rigid-flexible coupling model for simulation analysis. This paper explores a feasible method for virtual prototype analysis, as well as lays a foundation for more complex virtual prototype model.