Analysis Of Elastic Mechanics And Shape Optimization Of CNG Cylinder

Along with the development of modern industry, pressure vessels are widely used inelectric power, petroleum chemical industry, light industry, textile, metallurgy, machinery,transportation, mining, medicine, and other industry sectors and in daily life. Because of acombination of factors such as different pressure load, complex local stress, contactingcorrosive medium, operating under high and low temperature, the pressure vessel is arelatively easy to accidents of special equipment. High pressure cylinder is one of thepressure vessels, and also is a kind of special equipment. In order to ensure the personaland property safety of people, the research of the failure of high pressure gas cylinder hasvery important significance. The research of the pressure is an important aspect of failureresearch of the high pressure cylinder, and it is of great importance to the securityevaluation of high pressure gas cylinders.This topic is the analysis of elastic mechanics and optimization of CNG cylinder,which contains the pressure research of the high pressure gas cylinder. By using thin shelltheory this topic analysis the stress state of the high pressure cylinder which type of headare spherical and dished. By using the finite element analysis software Abaqus the topicsimulates the pressure performance of the high pressure gas cylinders which model areCNG325-65-20, CNG406-100-20and WZA267-70-15. In addition, the topic optimizes thestructure size of the head of the concave type of high pressure gas cylinder. and theoptimization makes the stress of the head part of the high pressure cylinder better, andwall thickness thinning. Finally the optimization makes the high pressure cylinder of theoverall reduction in weight.