Simulation Analysis Of Loading Capacity Of The New Two-grooved Steel Ribbon Wound Vessel

High pressure vessel is widely used in modern industry, Covering an extensive range of fields such as chemical, petroleum, pharmaceutical,nuclear, and aviation. With the development of industrial technology, the working conditions of high pressure vessels are more and more demanding, and the requirements for the design, manufacture, use and maintenance of the vessel are higher and higher; Meanwhlie,the improvement of the volume, pressure and other parameters caused the amplification of the cylinder wall thickness, weight and manufacturing difficulty. Based on the consideration of safety and economy of high pressure vessel, people have been trying to design a more reasonable form of high pressure vessel by structural optimization around manufacturing technology of high pressure cylinder with large wall thickness. The steel ribbon wound vessel has been paid more and more attention by the researchers because of its reasonable stress distribution and the safety characteristics of" leak only without explosion", this type of vessel is represented by the early germany ribbon wound vessel and Chinese flat ribbon wound vessel in the 60s of last century. A new type of two-grooved steel ribbon wound vessel has absorbed the advantages of the existing steel ribbon wound vessels and has been improved. Aiming at the loading capacity of the new type of steel ribbon wound vessel,the specific simulation analysis and engineering application analysis have been conducted in this paper, The details of the study are as follows:Firstly, the characteristics and main differences of the structure,manufacturing process and loading capacity between the two-grooved steel ribbon wound vessel and germany ribbon wound vessel and flat ribbon wound vessel were summarized and analyzed.The elastic theory analysis of the loading capacity of the new two-grooved steel ribbon wound vessel was completed and the mechanical model and basic assumptions of the cylinder were established.According to the simplified model of the cylinder, the axial stress formula and the contact pressure formula in inner cylinder and steel ribbon layers were derived. The radial stress and the circumferential stress formula in inner cylinder and steel ribbon layers were derived approximately through the Latin American formula. According to the elastic-plastic theory, combined with the Tresca and Mises yield failure criteria, ultimate loading capacity including yield pressure and burst pressure were deduced through the equilibrium differential equation and the boundary conditions.In addition, by using ANASYS finite element analysis software, the combined cylinder was simplified to axisymmetric model, comprehensive stress analysis and loading capacity analysis were completed.meanwhile, the stress distribution of the ribbon wound structure under different internal pressure and inner diameter was compared, and the rationality of the theoretical derivation was verified. On the foundation of theoretical analysis, the failure form of the structure was discussed, the factors which affect the failure form and the optimization methods were analyzed. The optimization design of the structure and some suggestions were put forward. Compared with different types of new ribbon wound structure, their stress characteristics were carried, some reasonable suggestions for the application of this new ribbon wound structure in the future were put forward as well.Finally, a large high-pressure hydrogen storage vessel with the internal diameter of 1000mm and the design pressure of 40MPa was taken as an example to complete the specific engineering application design, structural analysis and strength calculation. The finite element software was used to evaluate the structural strength and loading fatigue.