Strength of Perforated Steel Oval Stocky Stub Column

Abstract

Sustainability of building material generally concerned on construction, conservation and refurbishing of the used material. Based on the availability, cost and refurbishing of material, stainless steel has been considered as one of the best contenders among the materials used for structures. Out of all the sections, viz., square, circle, ellipse, oval, etc., available, oval section is one new section with aesthetical looks and unequal strength along the curve and flat elements of the section. Alike other cross-section, oval section may be introduced as stub column whose length is small enough lying within the range of three times the widest element of cross-section. Even though the length of stub column is short, its failure varied with the changes in thickness of the section and a detailed study needs to be done separately for different thickness of section, viz., thin slender or a stocky thick section. Usually, the slender cross-section is ineffective in taking the load, while the stocky thick cross-section takes full load. As perforation becomes an inevitable formed of members for inspection and piping, this paper presents the buckling strength of single square shape perforated stocky oval Lean Duplex Stainless Steel (LDSS) stub column using finite element analysis software (Abaqus). The presence of perforation reduces the stress concentration in the area of perforation. The curve element is more effective in taking the load as compared to the flat element of oval cross-section. The strength of the column reduces along with the increase in sizes of perforation. The strength of the column reduces more by the presence of perforation along the curve element as compared along the flat element of the section.