Around the national Marine strategic planning,in order to solve the urgent needs of the key components of the lightweight,high-strength,high-stability high-pressure structure of the underwater unmanned aerial vehicle.In this paper,thin wall composites of different lengths are developed by optimizing the selection of carbon fiber composites.The fi-nite element model is established by ANSYS,the structure design and strength and stability calculation of the thin-wall pressure cylinder are made.The hydrostatic pressure test of 1000 mm and 500 mm pressure cylinder was carried out by the deep-sea pressure simulation test device to complete the experimental verification.The finite element analysis shows that the safety factor of each stress is more than 1.6 times to meet the strength requirements.After reinforcement,the buckling coefficients of the 1000 mm and 500 mm composite pressure cylinder under external pressure are 1.95 and 2.0.Respective-ly,greater than the required value of 1.8,which can meet the rigidity requirements.Then,the pressure cylinder is tested by the deep-sea pressure simulation test device for 2 MPa external pressure.In the pressure environment,both 1000 mm and 500 mm pressure cylinders have pressure survivability.Thus,the thin-wall composites of different lengths developed in this paper meet the technical requirements,providing an effective solution for the heavy components of unmanned sub-mersible.
thin-walled pressure cylinderthe underwater vehicleexternal pressure testfinite element analysis
万方数据
维普
