Stress Analysis of Multilayer Pressure Vessel

摘要

Multilayer pressure vessel is designed to work under high pressure condition. In this paper, the stress analysis of multi-layer pressure vessel made of a homogeneous and isotropic material and subjected to internal pressure is considered. The hoop stresses for 1, 2 and 3-layer pressure vessel is calculated theoretically. The modeling of pressure vessel is carried out in CATIA V5 and this model is imported in ANSYS Workbench where stress analysis is carried out. The shrink fit is applied during the CAD modeling of multilayer pressure vessel. Both theoretical and FE results are compared and effect of multi-layering on stresses induced and the volume requirement to sustain the given pressure is calculated. Also optimization of number of layers is carried out for multi-layering the pressure vessel. From calculations it is observed that as the numbers of layers increases, the hoop stresses decreases.