Design And Analysis Of The Recovery And Holding Device For Underwater Glider

As a new type of ocean information observation platform,underwater glider has shown an excellent performance and great value in Marine application and research.However,after the completion of the operation,the underwater glider has no power and its posture is constantly changing due to the influence of sea conditions.The recovery of an underwater glider usually requires the cooperation of many people,which costs a lot of time and manpower.The improvement of recovery technology is crucial for the application of glider.In this paper,the research content is mainly about the design of the recovery device of the underwater glider.The purpose is to design a mechanical device with a simple and reliable structure which can safely recover the underwater glider.The research contents of this paper are as follows:(1)Firstly,Star-CCM+software was used to conduct dynamic simulation analysis of the movement state of the glider on the sea surface along with waves and currents when the glider was recovered,and the movement rule of the glider floating on the sea surface under different sea conditions was obtained.According to the result of dynamic response,the recovery condition of underwater glider is determined,which provides a reference for the design of the recovery device of underwater glider.(2)Secondly,the recovery plan was determined according to the working conditions of the underwater glider recycling and the glider's structure.The overall design of the recovery and holding device of the underwater glider was carried out.The theoretical design and calculation are carried out for the capture frame and grip claw.This paper pointed out the selection of materials and actuators.It established the three-dimensional model of the recycling hold device through the three-dimensional modeling software.(3)Thirdly,the recovery device is analyzed as a whole.The strength of the holding claw,the capture frame and the installation bracket were checked by finite element simulation.The structural optimization and weight reduction of the recovery and holding device were realized by using the finite element analysis results.At the same time,the buoyancy model of the recovery and holding device of the underwater glider was established.The buoyancy analysis and the design of the buoyancy module were completed.(4)Finally,the process of capturing and holding underwater glider by the recovery and holding device was described.The impact force model was established for the capture and holding process respectively by using ADAMS dynamics simulation software.Through motion simulation analysis,the feasibility of the structural design of the recovery and holding device was verified.The impact of different parameters on impact force was analyzed to optimize the recovery and holding device,which effectively reduced the impact force generated in the recovery process of the underwater glider.