Axisymmetric Stress Analysis of Internally Pressurized Rotating Cylinder using Finite Element Method

Abstract

The present paper is devoted to stress analysis of a homogenous, orthotropic, internally pressurized rotating cylinder. Assuming the cylinder in plain strain condition and that the volume remains constant, finite element method is used to find out the stresses and displacement at each node of isoparametric elements (Bilinear and Quadratic). FEM results are then compared with the exact values, comparison is also done between different element numbers ( for same element type ) and between different element types ( for same element number).
The reason for doing the comparison is to find out by how much the FEM results vary from the exact solution and to see how the FEM results converge to exact values by increasing the element number. Comparison also gives the brief idea about the two elements i.e which of the two elements gives better results for the same element number.