Influence of Cutout Position on Buckling of Large-Scale Thin-Walled Cylindrical Shell of Desulphurizing Tower with Welding Induced Imperfection under Wind Loading

Abstract:

Not only the geometrical imperfection induced by welding but also cutouts will influence the buckling of large-scale thin-walled steel cylindrical shell under wind loading. Based on the practical cylindrical shells of a desulphurizing absorption tower, in consideration of the correlation between welding induced imperfection and circular cutouts, the influence of cutout position on buckling of cylinder under wind loading is investigated by nonlinear finite element method. The results indicate that the buckling capacity varies slightly when the cutout position moves along meridional direction in the neighboring region of welding imperfection. The buckling capacity varies significantly when the cutout position moves circumferentially as the cutout is located in the welding imperfection. The buckling capacity reaches the minimum value as the cutout is located in the buckle center of cylindrical shells without cutout.

• Periodical: Applied Mechanics and Materials (Volumes 687-691)
• Pages: 68-72
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.687-691.68
• Online since: November 2014
• Authors: Qian Li*, Deng Feng Wang
• Keywords: Buckling of Thin-Walled Cylindrical Shells, Circumferential Welding Induced Geometrical Imperfection, Cutout, Nonlinear Finite Element Analysis, Wind Loading

References

[1] Zhao Yang, Teng Jinguang. Stability design of axially compressed thin steel cylindrical shells [J]. Engineering Mechanics, 2003, 20(6): 116―126. (In China).

[2] WANG Dengfeng. Study on the bearing capacity mechanism of desulphurizing tower structure of large-scale thin-walled steel cylindrical shells [D]. Nanjing: Hohai University, School of Civil Engineering, 2009: 21−38.

[3] Rotter J M, Teng J G. Elastic stability of cylindrical shells with weld depressions [J]. Journal of Structural Engineering, 1989, 115(5): 1244―1263.

DOI: 10.1061/(asce)0733-9445(1989)115:5(1244)

[4] Martin Pircher, Bridge Russell Q. Buckling of thin-walled silos and tanks under axial load-some new aspects [J]. Journal of Structural Engineering, ASCE, 2001, 127(10): 1129―1136.

DOI: 10.1061/(asce)0733-9445(2001)127:10(1129)

[5] Pircher M, Berry P A, Ding X, Beidge R Q. The shape of circumferential weld-induced imperfections in thin-walled steel silos and tanks [J]. Thin-Walled Structures, 2001, 39: 999―1014.

DOI: 10.1016/s0263-8231(01)00047-7

[6] Greiner R, Derler P. Effect of imperfections on wind-loaded cylindrical shells [J]. Thin-Walled Structures, 1995, 23: 271-281.

DOI: 10.1016/0263-8231(95)00016-7

[7] DIN 18800-4, Structural steelwork analysis of safety against buckling of shells[S].