Setting Failure Limits for L Shape Rectangular c/s by using ASME Stress Linearization Standards and FEA

Abstract

In this Paper Stress Linearization of L Shape Section at Stress Concentration Region is carried out. Stress linearization is the method used to see stresses within body by observing stresses like membrane and membrane plus bending stress. This technique is used in Pressure vessel Design on basis of elastic stress analysis and stress categorization. The objective of the study was to find out whether this standard design methodology proposed by ASME can be used for other supporting components or not. The material was selected in such a way that it was available in plate and bar form and also available in standard book provided by ASME standards. Based on ASME standards properties of material was determined which was used as input in FEA to perform analysis. Experimentation was carried out on UTM machine based on ASTM E8 / E8M standard. A non-linear analysis was performed for L shape c/s by performing mesh convergence and failure load was determined using Ansys 18.2. Based on ASME stress linearization failure stresses was determined for the given L section and linear and nonlinear analysis was carried out for L shape C/S to study its behavior. Based on failure load obtained from nonlinear analysis safety stresses of membrane, bending and peak stress was found out and in the end relation with allowable stress S was calculated.