Under the background of large-scale development of deep diving and high bearing submersibles in China.In order to solve the deep-sea submersible pressure structure key components of light weight,high strength,high fatigue strength needs.In this paper,the material selection of carbon fiber composite is optimized to make the structural design meet the design requirements.The finite element model is established by ANSYS,and the structure design and strength and stability calculation of the pressure cylinder are made.The hydrostatic pressure test of the pressure cylinder was carried out by the static pressure experimental chamber device to complete the experimental verification.Under the effect of 90 MPa ex-ternal pressure,the maximum stress component of the composite cylinder was less than the design value of T700 carbon fi-ber/epoxy resin material.The Mises stress of the end cap ring was less than the tensile strength of TC4 titanium alloy mate-rial,and the overall first-order buckling coefficient of the ballast tank was 1.81,which met the design requirements.The pressure structure of carbon fiber composite material is developed,and the external pressure test of carbon fiber ballast tank is carried out by static pressure experimental chamber device.Under the pressure environment of 76.5 MPa,the ballast tank has the survivability of deep sea pressure.The carbon fiber pressure resistant cabin developed in this article meets the technical requirements for deep-sea use.Provide an effective solution for important components of deep-sea submersi-bles.
carbon fiberballast chamberbathyscapheexternal pressure testfinite element analysis
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