Numérical Analysis of Cracks in Spherical Pressure Vessels: Impact of Crack Length on Stresses and Deformation in Linear and Non-Linear Cases of Steel P265GH

Abstract

This study focuses on analyzing cracks in spherical pressure vessels, specifically looking at how crack length affects stresses and deformation in the structures. The material used for this investigation is $\mathrm{P265GH}$ steel, a widely used material in equipment subjected to internal pressure. To simulate crack behavior in both linear and non-linear conditions, a combined approach is used, combining analytical methods with meshless finite element analysis. This approach allows for a precise modeling of crack propagation and internal stress distribution in structures under service pressure, overcoming the limitations of traditional mesh generation. The main goal is to provide a deeper understanding of how cracks impact the mechanical strength and safety of pressure vessels, offering valuable insights for optimizing the design and analysis of components under stress.