Stress Analysis of Different Reinforcement Pad for Nozzle Opening in Pressure Vessel

Author(s):

Jargal Faisal Mehbub , SHRI S'AD VIDYA MANDAL INSTITUTE OF TECHNOLOGY,BHRUCH; B. C. Patel, SHRI S'AD VIDYA MANDAL INSTITUTE OF TECHNOLOGY,BHRUCH; M. A. Jamnu, GOVERNMENT ENGINEERING COLLEGE,GODHRA; R. A. Mistry, Essar Learning Centre,Essar Steel India Ltd.,Hazira,Surat

Keywords:

Pressure vessel, Nozzle, Stress concentration, Circular Reinforcement pad, Elliptical Reinforcement pad, Comparative Stress Analysis

Abstract:

This paper presents the comparative stress analysis of pressure vessels which are subjected to internal fluid pressure. The area of shell wall near nozzle opening is seriously affected due to stress concentration which may cause the failure of pressure vessels. To minimize the stress concentration conventionally circular reinforcement pad is provided for shell wall. Depending upon the usage of pressure vessels, too much care is required in analysis of pressure vessels. Here an attempt is made to carryout comparative stress analysis. A pressure vessel having 7700mm internal diameter and 32mm thickness is selected for analysis. Nozzle diameters are taken 600,700,800,900,1000,1100 and 1200mm. CREO PARAMETRIC 3.0 is used to create geometry and ANSYS Workbench has been used for stress analysis. Here analysis is carried out for different models i.e. without reinforcement pad i.e. opening only and with circular as well as elliptical reinforcement pad. Further analysis is carried out for two models having maximum effect of reinforcement pad. A detailed comparative stress analysis has been carried out which shows that if elliptical reinforcement pad is used in place of circular reinforcement pad the saving in area required is about 30% to 50% which eventually reduce the cost of fabrication of pressure vessels.

Other Details:

Manuscript Id	:	IJSTEV2I11184
Published in	:	Volume : 2, Issue : 11
Publication Date	:	01/06/2016
Page(s)	:	354-360

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