TY - JOUR N2 - The paper deals with determination of flexural resistance buckling curves for welded I-section steel members made of high strength steel (S 690). In the paper the previously proposed BF analytical model is used for approximation of FEM results obtained using moderately large deformation shell theory and ABAQUS/Standard software. Final formulation of flexural resistance buckling curves is possible through the use of the Merchant-Rankine-Murzewski approach adopted extensively in the authors’ previous papers. For nonlinear optimization, which is needed for analytical model parameters determination, the Wolfram Mathematica package is used. Obtained results for S 690 steel are presented against the results for S 355 steel. L1 - http://journals.pan.pl/Content/115694/PDF-MASTER/08_ace-2019-0050.pdf L2 - http://journals.pan.pl/Content/115694 PY - 2019 IS - No 4 EP - 126 KW - buckling curve KW - welded I-sections KW - high strength steel KW - FEM modelling A1 - Gajewski, M.D. A1 - Giżejowski, M.A. A1 - Szczerba, R.B. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES VL - Vol. 65 DA - 15.12.2019 T1 - Minimum value approach for modelling of the buckling resistance of welded I-section high strength steel columns SP - 113 UR - http://journals.pan.pl/dlibra/publication/edition/115694 T2 - Archives of Civil Engineering ER -