Tests and finite element analysis on the local buckling of 420 MPa steel equal angle columns under axial compression

A novel DSM-based approach for the rational design of fixed-ended and pin-ended short-to-intermediate thin-walled angle columns

“…Preliminary numerical studies showed that the combined influence of strain hardening, residual stresses and rounded corner effects has little impact on the angle column failure loads (all differences below 3%), which is in line with the findings reported by other authors, namely Ellobody and Young [5] and Shi et al [28]. As mentioned earlier, the yield stresses f y were selected to cover a wide critical slenderness range, which implied considering a few unrealistic (small or large) values -the yield stress values adopted were (i) 30, 60, 120, 235, 400, 500 MPa (70 Â 1.2 mm columns), (ii) 120, 235, 400, 500 MPa (50 Â 1.2 mm and 50 Â 2.6 mm columns), and (iii) 120, 235, 400, 500, 600, 900, 1200 MPa (60 Â 1.5 mm, 70 Â 2.0 mm and 90 Â 2.5 mm columns).…”

Behaviour of Partially Closed Stiffened Cold-Formed Steel Compression Member

“…The residual stresses are not integrated in the finite element analysis because all the test specimens are fabricated using press-braking process [30]. Cold forming process is not considered in the finite element model because the effect of rounded corners was found to be insignificant [31]. After comprehensive mesh convergence study, a finite element mesh size of 10 × 10 mm is used to analyse the stiffened open complex channel section with or without spacer plates.…”

Flexural behaviour of composite beams with high strength steel

“…However, most of this research has focused on the behaviour of bare steel structures, and only a few research findings are related to composite steel and concrete structures. Rasmussen and Hancock [6,7], Usami and Fukumoto [8], Nishino et al [9], McDermott [10] and Shi et al [11] investigated experimentally the buckling behaviour of 690 MPa HS steel columns under compression, Ban et al [12] and Wang et al [13] reported the overall buckling performance of 460 MPa HS steel pin-ended columns and proposed a design method on the basis of a number of parametric studies, while Ban et al [14] and Shi et al [15] investigated the overall and local buckling behaviour of 420 MPa steel angle columns, with design approaches being proposed. It was identified in this work that the buckling behaviour of HS steel columns is improved significantly due to the less-severe effects of residual stress in comparison to conventional mild steel columns.…”