Design And Simulation Of 40MPa High Pressure Gas Bottle Made Of TC4

This paper is one part of academic research or pre-research and development for the study of 40MPa high pressure gas bottle made of TC4. The feasibility of the project is proved theoretically from the existing related achievement and experience and some academic preparations necessary are made also. According to the disadvantages of high pressure gas bottle made of steel 921,With the consideration of the characters of TC4, The advantages of high pressure gas bottle made of TC4 is analyzed thoroughly. Based on the research and the development status of high pressure gas bottle made of TC4 at home and aboard. The key technologies to make high pressure gas bottle made of TC4 are analyzed and the technical route is framed according to the key technologies. The structure of the gas bottle is designed and the parameters such as pressure, thickness and safety factor are given also. Structure simulation and Stress analysis for the high pressure gas bottle made of steel 921 and made of TC4 are carried out contrastively with finite element method. With the compare and analysis, the feasibility and advantages of the project are validated. Through the simulation of gas bottles with different safety factors ,a safety factor is worked out and the thickness of the gas bottle is optimized at the same time. According to the technical route, the structure of shrinked model is designed, then a simulation for the shrinked model with different proportion is carried out. A proportion for the shrinked model is given. With the reference of the test purpose and requirement for high pressure gas bottle, the systems for airproof, fatigue, water pressure and blast test are worked out. The study indicates that the plan to make the high pressure gas bottle made of TC4 is feasible theoretically and a well-proportioned shrinked model can offer the true information of the stress distribution for the real structure. A shrinked model is used in experimental and technical research for saving the research cost and shortening the research time. In this paper the technical foundation is made for the later research.