Numerical investigation into the buckling behaviour of face-to-face built-up cold-formed stainless steel channel sections under axial compression

作者: Krishanu Roy , James B.P. Lim

DOI: 10.1016/J.ISTRUC.2019.02.019

关键词: Parametric statisticsAusteniteBucklingMaterials scienceCorrosionFinite element methodTrussStructural engineeringCarbon steelDurability

摘要: Abstract Stainless steel is becoming popular as structural members because of its increased corrosion resistance and durability, compared with carbon steel. In cold-formed structures, such trusses, wall frames portal frames, the use face-to-face built-up stainless channel sections compression are increasingly popular. an arrangement, intermediate fasteners at discrete points along length prevent individual from buckling independently. Current guidance by American Iron Steel Institute (AISI) Australian New Zealand (AS/NZS) standards for describes a modified slenderness approach, to take into account spacing screws. Not even single experimental test or finite element analysis, however, have been reported in literature sections, understand effect screw spacing. The issue addressed numerically herein. This paper presents investigation on behaviour subjected axial compression. Three different grades i.e. duplex EN1.4462, ferritic EN1.4003 austenitic EN1.4404 considered. strength was investigated. A comprehensive parametric study carried out, covering wide range cross sectional geometries assess performance current design guidelines AISI AS/NZS. total, 160 models were analyzed. From results study, it found that & AS/NZS conservative around 15% all columns failed through global buckling. However, un-conservative 5% local

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