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Consistent matrices for steel framed structures with semi-rigid connections accounting for shear deformation and rotary inertia effects
Date
2017-04-15
Author
ÖZEL, HALİL FIRAT
Sarıtaş, Afşin
Tasbahji, Tayseer
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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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.
Subject Keywords
Steel structures
,
Finite element method
,
Semi-rigid connection
,
I-shaped steel sections
,
Shear deformation
,
Rotary inertia
,
Consistent matrices
,
Vibration
URI
https://hdl.handle.net/11511/35952
Journal
ENGINEERING STRUCTURES
DOI
https://doi.org/10.1016/j.engstruct.2017.01.070
Collections
Department of Civil Engineering, Article