20.500.12556/RUL-146451 A new locking-free finite element for N-layer composite beams with interlayer slips and finger joints This paper presents the formulation of strain-based finite elements for modelling composite beams with finger joints considering slip between the layers. The finite elements are derived according to Reissner beam theory based on the modified principle of virtual work where the displacements and rotations are eliminated from the problem and the axial deformation, shear deformation and curvature of the layers remain only functions to be approximated within the finite element. Lagrange polynomials are used as shape functions to approximate the deformations and various interpolation methods are applied to numerical examples, with the Lobatto integration scheme giving slightly better results than Equidistant. The experimentally measured mechanical properties needed as input data for the numerical model are given for the four glued laminated beech beams. The numerical model is thoroughly verified and validated. The results show that the presented finite element formulation is an efficient tool for practical and accurate calculations. beam theory partial interaction finger joint beech wood slip and shear locking experimental testing teorija nosilcev delna interakcija zobati spoj les bukve numerično blokiranje eksperimentalni testi true false true Angleški jezik Slovenski jezik Članek v reviji 2023-06-02 08:17:47 2023-06-02 08:17:50 2023-08-31 03:45:47 0000-00-00 00:00:00 2023 0 0 14 str. Vol. 220, art. 103936 Aug. 2023 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 624.011.1:624.072.2:674.031.631.2 0168-874X 10.1016/j.finel.2023.103936 145702659 1-s2.0-S0168874X2300029X-main.pdf 1-s2.0-S0168874X2300029X-main.pdf 1 B5A1E185846670386E751286BE425607 20054f422760d86e4e311cf089cc7fe8f8b802226fd61f8631f2ca04b8ce47b8 c4016c8e-4708-11ee-a605-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=173067 https://www.sciencedirect.com/science/article/pii/S0168874X2300029X 0 e44f40e8-010c-11ee-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=169647 Fakulteta za gradbeništvo in geodezijo Fakulteta za kemijo in kemijsko tehnologijo 0 0 0