ANALYSIS OF THE STRESS‐STRAIN STATE OF A COMPOSITE PRESSURE VESSEL

Abstract

The subject of analysis in this work is a composite pressure vessel used for storing Liquefied Petroleum Gas (LPG), specifically a propane‐butane mixture. Composite vessels for LPG storage are widely used due to their advantages, such as low weight, high corrosion resistance, and good mechanical properties.The analyzed vessel belongs to Type III (according to the classification of ASME –American Society of Mechanical Engineers and ISO – International Organization for Standardization), meaning it is a metal vessel with a full composite overwrap. The analysis was conducted using the Finite Element Method (FEM) in SolidWorks V2019 software. The results showed that the maximum von Mises stress values, as well as interlaminar stress values, do not exceed the allowable stress limits that would lead to structural failure. This was further confirmed by the obtained safety factor values, which are within the prescribed limits.