@ARTICLE{Bijak_R._Moment_2015, author={Bijak, R.}, number={No 4}, journal={Archives of Civil Engineering}, pages={127-140}, howpublished={online}, year={2015}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={The analytical approach is used for checking the stability of laterally unrestrained bisymmetric beams. The stability equations for simply supported beams are solved approximately using the Bubnov–Galerkin method [4]. The lateral buckling moment depends on bending distribution and on the load height effect. Each of applied concentrated and distributed loads, may have arbitrary direction and optional coordinate for the applied force along the cross section’s height. Derived equations allow for simple, yet fast control of lateral buckling moment estimated by FEM [15].}, type={Artykuły / Articles}, title={Moment krytyczny zwichrzenia niestężonych dwuteowników bisymetrycznych podpartych widełkowo}, title={The lateral buckling of simply supported unrestrained bisymetric I-shape beams}, URL={http://www.journals.pan.pl/Content/84054/mainfile.pdf}, keywords={moment krytyczny zwichrzenia, wzory analityczne, podparcie widełkowe, pryzmatyczne bisymetryczne belki dwuteowe, lateral buckling moment, simply supported beams with free warping, bisymmetric I-shaped beams, analytical solution}, }