Pressure Container Surface Crack Analysis

Abstract

High-pressure containers are widely used in modern industries, including chemical industry, oil, nuclear power, aviation and many other fields. As pressure vessels are widely used in various fields, it will face a more complex and changeable working environment. the effects of media environment and fatigue stress cause defects, which will greatly affect the normal work of the container. Therefore, this article conducts static analysis of the surface with cracks on the surface through the finite element numerical simulation method, analyzing the rules of crack expansion and the impact on the life of pressure vessels. Research results: The container was stretched vertically under the load of 10MPa, and the maximum deformation occurred at the top of the ellipse sealed head, with a maximum deformation of 1.63mm; The maximum stress value does not occur at the top of the container, but occurs in the crack, and the maximum stress value is 538.18MPa; The minimum value of the safety factor of the safety coefficient cloud diagram is 0.50, which is located at the crack. The intensity of cracks has a great impact on the intensity of high -pressure containers. It needs to be checked regularly on high -pressure containers to ensure the safe operation of the equipment.