Jasion, P.; Pawlak, A. M.; Paczos, P.; Plust, M.; Rodak, M. Bending Behaviour of Thin-Walled Perforated Channel Beams With Modified Cross Sectional Shape – Part 2: Analytical Calculations and FEM. Bull. Pol. Acad. Sci. Tech. Sci. 2025, 73, e153435.