Structural Design And Spatial Modular Layout Optimization Of Sea-going Vehicle

The ocean is an important strategic support point for a country's development and the cornerstone of a country's development.With the development of science and technology,hallow sea exploration work has become more and more perfect,so the country has gradually extended the depth of detection to the deep sea.The biggest difficulty in the deep sea is how to smoothly transport the detection equipment to the corresponding work site,so the deep sea The carrier came into being.In today's world,many countries have begun to develop intelligent and unmanned ocean exploration devices.In the military,deep-sea transportation platforms have a series of advantages such as intelligence,informationization,three-dimensionality,and networking.In future ocean exploration and military operations,the strategic objectives of first discovery,reporting,and attack can be achieved.The deep-sea vehicle developed in this thesis is a carrier platform capable of autonomous navigation,autonomous detection,and autonomous work.The role of the carrier is to safely and smoothly transport the work load that needs to be carried for various tasks and working conditions to the work area,and assist in the work to realize the safety and efficiency of the work.But there are huge design difficulties for deep-sea vehicles.First of all,the design shape of the vehicle must conform to the dynamic shape.Carry as much work load as possible under the condition of satisfying the shape,and at the same time,it also requires a certain deep diving ability and many other issues.In response to the above problems,the main innovations in the work of this article are:(1)This article proposes a modular layout plan for the problems of deep-sea vehicle carrying heavy task load,difficulty in replacing task load and inconvenient maintenance.The carrier load is divided into AUV module,glider module,floating warehouse module,electronic warehouse module,radar module and power module,etc.Compared with the traditional integrated design concept,the modular design greatly improves the work efficiency and reduces the workload during maintenance.,To meet the requirements of rapid deployment and rapid update.(2)The design method combining mathematical model and optimization algorithm is adopted in the internal layout of different modules.The internal space of the carrier is limited,but the geometric size of the load and the data difference of the center of mass make the layout very difficult.In response to this problem,this thesis transforms the physical model into a mathematical model to optimize the layout design,and the load affects the overall moment of inertia of the carrier.The minimum is the optimization goal to meet the non-interference constraints and the minimum impact of dynamic and static loads on the mobility of the vehicle.The mathematical optimization model is established,and the particle swarm optimization algorithm is used to optimize the design to obtain the optimal moment of inertia and the maximum load.There are space position coordinates under the moment of inertia to realize the optimal design of the position.(3)This article designs the carrier structure based on the installation plan of each module.The structure meets the intensity conditions of horizontal movement,vertical floating movement and spiral descent movement,and adopts cellular automata optimization algorithm for topology optimization to obtain a lightweight structure.The overall weight of the carrier is reduced by 47% while meeting the requirements of the overall rigidity of the carrier,which greatly reduces the weight of the carrier,and greatly improves the carrying capacity and the mobility of the carrier.