A Simplified Axisymmetric Analysis of Steel Containment Under General Dynamic Pressure

[+] Author and Article Information
F. Fanous, L. Greimann

Department of Civil and Construction Engineering, Iowa State University, Ames, IA 50011

J. Pressure Vessel Technol 112(1), 65-70 (Feb 01, 1990) (6 pages) doi:10.1115/1.2928589 History: Received August 31, 1988; Revised March 22, 1989; Online June 17, 2008


Loadings to cause severe accidents on containment buildings can include combinations of uniform internal pressure, dynamic pressure, and seismic. Most studies that have been conducted to predict containment building capacity have focused on the effect of over pressurization on containment performance. A simple methodology that permits rapid and reasonably accurate analysis for assessing the capacity of steel containment buildings; due to global or local uniform or spatially varying dynamic loading was developed. An axisymmetric model was used and the circumferential variation of the pressure, displacements, and stress resultants were represented by Fourier series. Shell vibration and buckling analysis were performed using modified versions of BOSOR4 and BOSOR5 finite difference codes. The modified version of BOSOR5 allows the input of pressures that vary along the meridional direction. These pressures were increased until failure of the containment occurred. Failure was defined to occur when membrane strains reached twice the yield strain or the bifurcation point was introduced. The axisymmetric analysis demonstrated a powerful tool to access the capacity of steel containment buildings.

Copyright © 1990 by The American Society of Mechanical Engineers
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