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Keywords: corroded domes, external pressure, vacuum, bifurcation buckling, collapse.

Summary

corrosion confined to the knuckle, and
corrosion spanning evenly the knuckle and spherical parts.

In both cases the meridional extent of the corrosion is varied. This allows the identification of the worst position and size of the corroded area (i.e., leading to the largest reduction of buckling strength). Loss of buckling strength is measured against a perfect (non-corroded) head. Numerical results indicate that the following factors influence buckling performance of the dome:

meridional position of corroded area,
depth of corrosion itself, and
meridional span of corroded wall.

For example, wall thinning of 10 %, over 10 % of the meridional length causes almost a 20 % drop in buckling strength. The largest drop of in load carrying capacity is found when the corroded wall is at the knuckle/crown junction. It is shown that collapse pressure overestimates the load carrying capacity by 40 %. Hence it is erroneous to rely on the magnitude of the collapse pressure, only when assessing the performance of corroded torispheres.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 216 Plastic Buckling for Pressure Vessel Ends subjected to Corrosion Wall Thinning J. Blachut School of Engineering, The University of Liverpool, United Kingdom doi:10.4203/ccp.102.216 purchase the full-text of this paper Full Bibliographic Reference for this paper J. Blachut, "Plastic Buckling for Pressure Vessel Ends subjected to Corrosion Wall Thinning", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 216, 2013. doi:10.4203/ccp.102.216 Keywords: corroded domes, external pressure, vacuum, bifurcation buckling, collapse. Summary corrosion confined to the knuckle, and corrosion spanning evenly the knuckle and spherical parts. In both cases the meridional extent of the corrosion is varied. This allows the identification of the worst position and size of the corroded area (i.e., leading to the largest reduction of buckling strength). Loss of buckling strength is measured against a perfect (non-corroded) head. Numerical results indicate that the following factors influence buckling performance of the dome: meridional position of corroded area, depth of corrosion itself, and meridional span of corroded wall. For example, wall thinning of 10 %, over 10 % of the meridional length causes almost a 20 % drop in buckling strength. The largest drop of in load carrying capacity is found when the corroded wall is at the knuckle/crown junction. It is shown that collapse pressure overestimates the load carrying capacity by 40 %. Hence it is erroneous to rely on the magnitude of the collapse pressure, only when assessing the performance of corroded torispheres. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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