Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13887
Title: Fabrication of small models of large cylinders with extensive welding for buckling experiments
Authors: Teng, JG 
Lin, X
Keywords: Axial compression
Buckling
Cylinders
Experiments
Imperfections
Shells
Welding
Issue Date: 2005
Publisher: Pergamon Press
Source: Thin-walled structures, 2005, v. 43, no. 7, p. 1091-1114 How to cite?
Journal: Thin-walled structures 
Abstract: Cylindrical shells in large steel silos and tanks are commonly constructed from a large number of curved panels joined by many circumferential and meridional welds (referred to as the panel method hereafter). The extensive use of welding in these shells is a unique feature not previously studied in laboratory buckling experiments due to the great difficulty in fabricating realistic small-scale model shells. This paper presents an innovative technique for the fabrication of small models of such large steel cylindrical shells constructed from many welded panels. The experimental set-ups to implement this technique in the laboratory are also described. The new technique consists of two stages: (a) production of a high quality model by rolling two sheets (or a single sheet) and welding along the meridional seams; and (b) 'welding' in the form of controlled heat input in a required pattern of circumferential and meridional 'welds' on the central portion of the shell surface. The imperfections in an example specimen are also examined to show that they have a realistic pattern. The observed buckling behavior of this specimen is presented and discussed. The specimen buckled at a very low load, confirming that the welding-induced imperfections in such shells are severely detrimental to the buckling strength.
URI: http://hdl.handle.net/10397/13887
ISSN: 0263-8231
EISSN: 1879-3223
DOI: 10.1016/j.tws.2004.11.006
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