期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
期号：NCRACE
页码：160
出版社：S&S Publications
摘要：In this paper, finite element (FE) studies forLDSS (Lean Duplex Stainless Steel) square hollow,single wall, diagonal walls and double walls hollow stubcolumns (i.e. SHC, -HC, XHC, and +HC respectively)are presented using Abaqus, to gain an understandingof multi-cellular cross sectional effects on ultimatestrength of column. The LDSS hollow columns havingequal material cross-sectional areas with thicknessvarying from 1 mm to 10 mm were subjected touniform axial compression. The length of the columns(~1800 mm) of about three times the outer width ofSHC was considered for analyses to maintainstockiness of columns. Based on the analyses, it hasbeen found that for all the hollow columns considered,a nearly linear variation of Pu with section thicknesshas been observed. The increase in Pu with 300 %increase in thickness (from 2.5 mm to 10 mm) is oforder ~ 1040 %, 1080 %, 1037 % and 989 % for SHC,-HC, XHC and +HC respectively. In comparison withSHC, multi-cellular columns performed better in termsof Pu. It is found that the increase in Pu/Pu(SHC) isrelatively lesser for t ≤ 2.5 mm compared to otherhigher thicknesses; for t > 2.5 mm the effect of t onPu/Pu(SHC) is not very apparent. A nearly linear increase(> ~ 100%) in Pu has been seen as the sections arechanged from SHC→-HC→XHC→ +HC.
关键词：Buckling; Lean Duplex Stainless Steel;Finite Element Modelling; Multi-cell stub columns;Abaqus
