Analysis to determine stress intensification has been carried out for ‘mitre bend’ made of composite (orthotropic) material. The analysis considers in-plane and out-of-plane bending under the effects of ‘with internal pressure’ and ‘without internal pressure’ loadings. Shear stress effects and the effect of change in mean radius ‘r’ of the pipe have also been incorporated in the analysis. The analysis is based on the principles of Strain Energy and Least Work. Computations have been done on a computer, using C language. Results are plotted for varying values of geometrical, material and load parameters. It is concluded that in the process piping, the orthotropic mitre bends will be better alternative (as they show a lower SIF) to metallic bends.
Single-mitre bend, Ovalization, In-plane bending, Out-of-plane bending, Shear stress effect, Effect of change in mean radius, Composite material
