Effect of stress concentration factor at the junction of shell to nozzle

Abstract

Pressure vessels find wide applications in thermal and nuclear power plants, process and chemical industries,
in space and ocean depths, and fluid supply systems in industries. Pressure vessels are used to stored fluid or gases with
the required pressure for necessary process. In pressure vessel nozzle is used to inlet and outlet of fluid.. In pressure, vessel
weakened by at the junction of shell to nozzle. The higher stress around the nozzle –shell junction due to internal pressure,
temperature and external load. This causes the rise in the stress distribution around the hole, to study the effect of stress
concentration and magnitude of localized stresses, a dimensionless factor called Stress Concentration Factor (SCF), is
used to calculate the stress rising around hole. The effect of stress concentration to determine by dimensionless factor
called stress concentration factor (Kt). Determine of S.F.C is ratio of maximum stress and nominal stress. so ultimate aim
of this research work ,reduce the SCF by designing Reinforcement Pad and also find the minimum thickness of the pad
using ABAQUS. Also study the parametric study of R.F.Pad to use in radial Nozzle.