An Accurate modeling approach for calculating the vibration characteristics of steel framed structures with semi rigid connections

2015-07-01
Özel, Halil Fırat
Sarıtaş, Afşin
Show full item record
146
views
0
downloads
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 any section on the element is accurately captured without any need for specification of different displacement shape functions for each individual case. The element response does not necessitate further discretization due to the presence of semi-rigid connections. Benchmark numerical examples for a steel I-beam verifies the accuracy of proposed element with and without semi-rigid connections
Vibration characteristics, Semi-rigid connection, Finite element modeling, Steel framed structures
https://hdl.handle.net/11511/80847
http://users.metu.edu.tr/asaritas/Conferences/281_Ozel_Saritas_FULLPAPER.pdf
8th International Conference on Behaviour of Steel Structures in Seismis Areas STESSA 2015,
Department of Civil Engineering, Conference / Seminar

Suggestions

Consistent matrices for steel framed structures with semi-rigid connections accounting for shear deformation and rotary inertia effects
ÖZEL, HALİL FIRAT; Sarıtaş, Afşin; Tasbahji, Tayseer (2017-04-15)
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 approxima...
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...
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 ...
A Finite element model for partially restrained steel beam to column connections
Köseoğlu, Ahmet; Sarıtaş, Afşin; Department of Civil Engineering (2013)
In the analyses of steel framed structures it is customary to assume the beam to column connections as either fully rigid which means that all moments are transferred from beam to column with negligible rotation or ideally pinned that resists negligible moment. This assumption is reasonable for some types of connections. However when considering steel connections such as bolted-bolted double web angle connections it can be seen that the behavior of these connections is in between the two extreme cases. Thus...
A Study on Tensile Strength of Compacted Fine-Grained Soils
Dagar, Volkan; Çokça, Erdal (Springer Science and Business Media LLC, 2020-08-01)
The tensile strength of clay is a major mechanical parameter and the main controlling parameter of tensile crack development which is generally encountered in geostructures. In this experimental study, 8-shaped direct tensile test and split tensile test were used to measure the tensile strength of compacted clay soil. Unconfined compression tests on the same clay samples were also carried out. Tensile strength and unconfined compression test results were compared. Laboratory tests were performed on Ankara c...
Citation Formats
H. F. Özel and A. Sarıtaş, “An Accurate modeling approach for calculating the vibration characteristics of steel framed structures with semi rigid connections,” presented at the 8th International Conference on Behaviour of Steel Structures in Seismis Areas STESSA 2015, Shanghai, China, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/80847.
METU IIS - Integrated Information Service open@metu.edu.tr