Buckling Instability in Cracked Pressure Vessels Subjected to Combined Loading

Abstract

In this study the eigenvalue buckling analysis of cracked pressure vessels is done using eight node degenerated elements in the framework of finite element analysis (FEA). First, the validity and efficiency of the proposed FEA method are examined in comparison with available results using Linear Buckling Analysis. Subsequently, the approach is applied to analyze cracked thin cylindrical shells subjected to various loading conditions, including axial compression, and combined internal pressure and axial compression. Additionally, the study investigates the effects of various parameters such as crack length and angle, aspect ratio of the cylinder, and internal pressure on the buckling behavior.