Design And Strength Analysis Of Underwater Robot Pressure-resistant Instrument Module

With 361 million square kilometers of surface area of the oceans,accounting for 71% of the total area of the Earth,many of which are vast natural resources and biological resources,however,so far,the extent of human exploration of the ocean is minimal,and now only 5% of the seafloor has been excavated,except for the vast majority of other people is still an unknown area.With the development of marine resources,the status of the oceans has been paid more and more attention.Since the 1960 s,mankind has been able to easily reach all parts of the earth's surface and even reach outer space and the moon outside the Earth.However,few countries can realize the underwater swim to explore the depths of the ocean.After all,the high-pressure environment in the deep sea is a major challenge that restricts mankind's exploration of the deep sea.Under the deep sea environment,whether the underwater robot can work normally and whether the operation of the underwater robot can be safe and reliable is based on the structure of the pressure resistant instrument cabin.In the field of underwater robots,cylindrical pressure vessel has been widely used.Pressure resistant equipment compartment to withstand both external pressure,but also to provide buoyancy underwater robot.In this paper,a new type of pressure vessel design scheme for underwater robots is proposed in this paper.The ANSYS Workbench simulation software is used to solve many problems in the design of the instrument vessel under different conditions.The best cabin design results.This thesis first introduces the current development of underwater robots at home and abroad,briefly describes the finite element simulation software widely used in engineering design-ANSYS Workbench,and expounds the research significance and content of this article.Based on this,a new design of the pressure-resistant structure of the underwater robot's instrument cabin was designed and the structural strength and stability of the underwater robot were simulated by ANSYS Workbench software to get the optimal design Program.First of all,based on the requirements of the research mission of the underwater robot's equipment compartment,we designed the structural outline of the equipment compartment preliminarily.The configuration is cylindrical,including the instrument's trunk and cover.Different materials were designed in the design of cylinder body,and the cylinder body with different materials was calculated by ANSYS Workbench software.After determining the material of the cylinder body,only the thickness of the cylinder body was changed under the condition of the same boundary conditions.The total stress Strain situation,according to the calculation and analysis to choose the best cylinder design.The best design of the instrument compartment cover is also obtained by comparing the ANSYS Workbench simulation data of different structural forms and different wall thicknesses under the same boundary conditions.The sealing structure is designed according to the standard of the mechanical design manual at the junction of the cap and the barrel.Finally,the instrument room manufactured according to the final design plan successfully passed the pressure reliability test to verify the reliability and feasibility of the instrument room.