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Structural behaviour of flat oval LDSS stub column under pure axial compression

Khwairakpam Sachidananda, Konjengbam Darunkumar Singh

This paper presents numerical modelling of LDSS (Lean Duplex Stainless Steel) Class 3 flat oval hollow section columns under pure axial compression using the commercial finite element software, Abaqus (2010). A parametric study has been carried out to assess the effects of thickness and flat length on the load and deformation capacity of flat oval stub columns. The columns with longer flat length have more column strength than that of column with shorter flat length. The percentage increase in strength along with the increase in area is more in case of increase in thickness than the column with increase in flat length. The deformation capacity of the flat oval column reduces as the flat length of the column increases in the cross-section. The current code of EN 1993-1-4 (2006) can be used for the prediction of compact LDSS flat oval column.