Design And Co-simulation Research On Locking Mechanism Of Drop Keel System

While the marine resources have become one of the focuses of international competition and the possession, they are directly related to a country's peaceful and sustainable development.Ocean-graphic vessels are the key facilities to the effective detection and utilization of marine resources. As a special engineering ship, the operating environment of its detection equipments directly affect the marine scientific research.Since the flow speed on the surface of the hull is fast while the ship is in the voyage,it's too difficult to meet the environmental requirements when the equipments work directly, the detecting instrument cabin comes to being. Locking mechanism as a guarantee equipment to ensure the bay quickly and efficiently lock in the required detective position, its importance is self-evident.It is common for the mechanical and hydraulic interactive systems to simulate each performance independently, but co-simulation is uncommon. The driving forces of hydraulic equipment and the hydraulic system load of mechanical equipment can't be specidfied accurately neither, which leads to a certain bias of the results. To solve the above problem, the following aspects were done as follows:1) Summarized the current research ships and locking system research development at home and abroad. Expounded the development of virtual prototyping technology and its application in the hydraulic system;2) Described the structure, the operation mechanism, the main function and operational requirements of the locking system, designed the components and related parts parameters, thus confirmed the locking system model;3) Established the3-D locking models in Pro/E, handled the relevant components flexible by finite element software Nastran, analysed the kinematics and dynamics performance, and built itsrigid-flexible coupled model, analysed of flexible parts and components of the whole system influence, confirmed the final close to the actual situation and the firm rigid-flexible coupled model for calculation;4) Designed the hydraulic system according to the function of the locking system, analysed the performance of hydraulic components and its influence on the whole system. Then set up AMESim model of the locking system, whose parameters are determined and static performance are analysed. Simplified and debugged the system to guarantee the correctness of the hydraulic parameters;5) Real-time data transmission by ADAMS and AMESim software Interface, then built the whole system simulation model in AMESim, analysed the simulation results by co-simulation, finaly established co-simulation model of the whole system successfully to guide the practical design and production.