Consistent matrices for steel framed structures with semi-rigid connections accounting for shear deformation and rotary inertia effects

2017-04-15
ÖZEL, HALİL FIRAT
Sarıtaş, Afşin
Tasbahji, Tayseer
Estimation of vibration characteristics and thus the seismic loads acted on steel framed structures are influenced by the presence of semi-rigid connections and accurate modeling of shear deformations and rotary inertia effects. This paper presents a finite element model that takes into account all these effects in order to calculate consistent stiffness and mass matrices. The formulation of the element utilizes three fields Hu-Washizu-Barr principle, where the need for displacement shape function approximation is eliminated through the use of force-based approach. The proposed model does not require extra discretization to capture localized connection response. An accurate shear correction coefficient for I shaped steel sections is implemented to represent shear deformation and rotary inertia along steel beams and columns. Numerical examples on single member, portal frame and multi-story steel framed structures verify the accuracy and robustness of the proposed element with and without semi-rigid connections.

Citation Formats
H. F. ÖZEL, A. Sarıtaş, and T. Tasbahji, “Consistent matrices for steel framed structures with semi-rigid connections accounting for shear deformation and rotary inertia effects,” ENGINEERING STRUCTURES, vol. 137, pp. 194–203, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35952.