Retracted: The effect of shell local deviation on pressure vessel structure with stress analysis finite Elemen method

Abstract

In the design and manufacture of pressure vessel (PV) at the industrial field, it needs a stress analysis that can be perform by analytical or numerical calculations. Besides for new PV design, stress analysis with numerical method is also performed for defective PV in accordance with CODE API 579-1 / ASME FFS-1 Fitness for Service. Mechanical defect/damage for PV consists of 5 categories include geometrical aspect. Geometry defects such as shell local deviation are classified into weld misalignment and shell distortions. This paper aims to determine the effect of shell local deviation on PV structure with SA 537 class 2 as PV material using the stress analysis of finite element method. The research was conducted by modeling and simulating PV models. The defective PV geometry data was obtained through direct measurement results. While the material data was obtained from PV design data and validated by hardness test on PV material. As the result of simulation shows that shell local deviation affects PV structure with increasing the value of maximum stress and maximum deformation depend on loading combination