Development and validation of a numerical model for buckling of coped beams

Lateral Torsional Buckling of Steel Beams Elastically Restrained at the Support Nodes

“…The literature on different issues related to lateral torsional buckling (LTB) of beams is vast, yet in a majority of cases it focuses on the determination of critical moments with the assumption that fork support is used. For such idealised support conditions, among others, the impact of the following was investigated: (a) distribution of the bending moment [2][3][4][5][6][7], (b) points at which various transverse loads are applied over the section height [2,[8][9][10][11], (c) elastic restraint against torsion over the beam length [11][12][13][14][15][16][17], (d) geometric ratios of monosymmetric sections [3,5,9], (e) coped beams and "incomplete" end plates [14,[18][19][20][21][22][23], and (f) point lateral bracings [16,17,[24][25][26][27].…”

“…In addition to the elastic restraint against rotation about the major axis of the section (i.e., in the plane of the beam greater stiffness), a restraint of warping and rotation with respect to the minor axis in the support sections is also found. Theoretical, e.g., [14,18,19,21,22,[28][29][30][31][32][33][34], and also experimental investigations [20,23,30] indicate that taking into account the actual conditions of beam support at the structure nodes can significantly affect the value of the elastic critical moment.…”

Lateral–torsional buckling resistance of coped beams

“…According to previous research [1][2][3][4][5][6][7][8][9], the influence of the cope increases with increasing depth to span ratio. Therefore, most calculations were carried out on relatively stocky beams.…”

“…Local web deformation may also occur if endplates are not welded to the full height of the section end. In order to quantify the influence of copes and partial end plates on the elastic critical buckling load and on the buckling resistance, a parameter study was carried out with the numerical models, described in [1].…”

Experimental and numerical parametric study on the capacity of coped beam ends

“…LTB of end coped I-beams has been investigated by several authors [1][2][3][4][5][6][7][8][9][10]. These investigations range from classical energy solutions for general beams to FE studies on complete assemblies of beam and connections and cover cases with copes at one or both flanges and various connections, such as end-plates, partial end-plates and web angles.…”