Finite Element Analysis of Stress for Nozzle Zone at Channel of Pressure Vessel

Abstract

With the development of petrochemical industry, the status of pressure vessel has become increasingly important, and higher requirements are introduced for the security of nozzle zone at the pressure bearing region of pressure vessel. In order to study the stress status of nozzle zone at the channel of pressure vessel, solid modeling for channel and straight pipe was performed with ANSYS software. Through finite element analysis and calculation, the stress concentration region of channel was determined and the reason was analyzed. In addition, the nozzle zones of the model before and after loading were compared. The result reveals that symmetrical stress concentration region lies at the junction of channel and pipe. The maximum stress is located at the inside of nozzle zone of channel and less than the yield stress of material.

Junctions in shell structures: A review

“…A parametric study was conducted for a wide range of tee joints. Lv and Wang [181] performed FE analysis with ANSYS code of stresses in the nozzle zone at channel of pressure vessel. The results revealed that the stress concentration region lied at the junction of channel and pipe.…”

Investigation of Nozzle Shape, Number of Nozzles and Nozzle Inclination Angle and Its Optimization

“…Further, they compared theoretical and numerical values of stresses for both solid wall and multilayer pressure vessel. Using ANSYS software, Lv and Wang [9] investigated the stress state of the nozzle zone at the pressure vessel's channel, solid modeling for the channel, and straight pipe. They discovered that the symmetrical area of stress concentration is at the channel-pipe junction, and the greatest stress is at the inside of the nozzle zone of the channel, which is less than the material's yield stress.…”