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

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

93
views

0
downloads

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

Suggestions

OpenMETU
Core

Vibration characteristics of various wide flange steel beams and columns Özel, Halil Fırat; Sarıtaş, Afşin; Tasbahjı, Tayseer (null; 2015-12-11) Vibration characteristics of steel framed structures are affected by accurate modelling of the mass and stiffness matrices of beam and column members. In this regards, wide flange sections are the most popularly used steel sections, and calculation of axial, flexural and shear responses of these sections become critical. In this study, a mixed formulation frame finite element is developed from three-fields Hu-Washizu-Barr functional. Consistent mass matrix of the element is obtained such that determination ...
Modeling of the nonlinear behavior of semi-rigid connections in steel framed structures and its influence on three dimensional analysis of structural systems Özel, Halil Fırat; Sarıtaş, Afşin; Department of Civil Engineering (2019) In steel frame structures, introducing the nonlinear force-deformation behavior of frame members with flexible joints will show closer results to the actual behavior. In this thesis, a mixed formulation frame finite element is developed from a nonlinear force-based method that can include localized semi-rigid connection response. The formulation of the element uses the three-fields Hu-Washizu-Barr principle, where displacement shape function approximation is omitted with the use of a force-based approach. T...
An Accurate modeling approach for calculating the vibration characteristics of steel framed structures with semi rigid connections Özel, Halil Fırat; Sarıtaş, Afşin (null; 2015-07-01) Vibration characteristics of steel framed structures are affected by the presence of semi-rigid connections. In this study, a mixed formulation frame finite element is developed from force method, where the variational form of the element bases on the use of three-fields Hu-Washizu-Barr principle. Consistent mass matrix of the element is obtained such that determination of vibration frequencies of members with varying geometry and material distribution as well as the presence of semi-rigid connections at an...
Modeling of the nonlinear behavior of steel framed structures with semi rigid connections Sarıtaş, Afşin; Özel, Halil Fırat (null; 2015-07-21) A mixed formulation frame finite element with internal semi-rigid connections is presented for the nonlinear analysis of steel structures. Proposed element provides accurate responses for spread of inelasticity along element length by monitoring the nonlinear responses of several crosssections, where spread of inelasticity over each section is captured with fiber discretization. Each material point on the section considers inelastic coupling between normal stress and shear stress. The formulation of the ele...
Nonlinear Vibrations of a Beam with a Breathing Edge Crack Using Multiple Trial Functions Batihan, Ali C.; Ciğeroğlu, Ender (2016-01-28) In this paper, a beam like structure with a single edge crack is modeled and analyzed in order to study the nonlinear effects of breathing crack on transverse vibrations of a beam. In literature, edge cracks are generally modeled as open cracks, in which the beam is separated into two pieces at the crack location and these pieces are connected to each other with a rotational spring to represent the effect of crack. The open edge crack model is a widely used assumption; however, it does not consider the nonl...

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, pp. 194–203, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35952.