Improving seismic performance of portal frame structures with steel curved dampers

Ghabussi, Aria; Marnani, Jafar Asgari; Rohanimanesh, Mohammad Sadegh

doi:10.1016/j.istruc.2019.12.025

Cited by 70 publications

(6 citation statements)

References 17 publications

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“…Since the start of the research in roughly 1980, numerous investigations have been conducted. An extensive analysis of the subject is provided in this article [4,5].…”

Section: Introductionmentioning

confidence: 99%

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi-Rigid Joints of Steel Structures Using Response Surface Method

Freya

Senthil

2022

Advances in Civil Engineering

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This work deals with the multiobjective optimization of rheolohical parameters on a novel designed flexible joints using shear thickening fluid dampers (STFD) on steel structures. The proposed damper consists of the shear thickening fluid (STF) with the combination of nano-silica and PEG (400) sonicated to achieve colloidal dispersion of nanoparticles. Series of cyclic loading were imposed on the frames equipped with STF dampers to assess their impacts on T-steel frames. The stiffener end plate is bolted over the corner of the joints that are subjected to bending moment. The multi-objective optimization using the response surface method of the rheological parameters for STF dampers was studied in order to reduce the dynamic forces and moments produced in a semi-rigid joint of the steel structures. Results from the analysis were used to obtain correlations between the response variables and the input factors (effective stiffness of 449.89 N/mm, complex viscosity of 98.69 Pa.s, and damping constant of 446.99 N.s/mm) for the proposed STF damped semi-rigid joints.

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“…Since the start of the research in roughly 1980, numerous investigations have been conducted. An extensive analysis of the subject is provided in this article [4,5].…”

Section: Introductionmentioning

confidence: 99%

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi-Rigid Joints of Steel Structures Using Response Surface Method

Freya

Senthil

2022

Advances in Civil Engineering

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“…In addition, with the aid of an experimental study, Rafiee et al (2009) reported that the composite structures which are reinforced with GPL are much stronger than the reinforced structures with single walled carbon nanotube, double walled carbon nanotube, and MWCNT. Moreover, a large number of studies (Ebrahimi et al, 2019a(Ebrahimi et al, , 2019b(Ebrahimi et al, , 2019c(Ebrahimi et al, , 2019dEsmailpoor Hajilak et al, 2019;Ghabussi et al, 2019Ghabussi et al, , 2020Habibi et al, 2019aHabibi et al, , 2019bHabibi et al, , 2019cHabibi et al, , 2019dHashemi et al, 2019;Mohammadgholiha et al, 2019;Mohammadi et al, 2019;Pourjabari et al, 2019;Safarpour et al, 2018Safarpour et al, , 2019aSafarpour et al, , 2019bShokrgozar et al, 2019) claimed that adding a little bit of GPL into the epoxy matrix results in a structure that has a remarkable property in thermo-electro-mechanical aspect. In the field of improving the mechanical properties, enhancing the elastoplastic stability and instability of sheet metal is presented in some research works with the aid of experimental and finite element method (Gao et al, 2018a(Gao et al, , 2018b(Gao et al, , 2018c(Gao et al, , 2018d(Gao et al, , 2019.…”

Section: Introductionmentioning

confidence: 99%

Frequency characteristics of a viscoelastic graphene nanoplatelet–reinforced composite circular microplate

Ghabussi

Habibi

NoormohammadiArani

et al. 2020

Journal of Vibration and Control

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This is the first research on the frequency analysis of a graphene nanoplatelet composite circular microplate in the framework of a numerical-based generalized differential quadrature method. Stresses and strains are obtained using the higher order shear deformation theory. The microstructure is surrounded by a viscoelastic foundation. Rule of the mixture is used to obtain varying mass density and Poisson’s ratio, whereas the module of elasticity is computed by a modified Halpin–Tsai model. Governing equations and boundary conditions of the graphene nanoplatelet composite circular microplate are obtained by implementing Hamilton’s principle. The results show that outer to inner radius ratio [Formula: see text], ratios of length scale and nonlocal to thickness ( l/ h and [Formula: see text]), and graphene nanoplatelet weight fraction [Formula: see text] have significant influence on the frequency characteristics of the graphene nanoplatelet composite circular microplate. Another necessary consequence is that by increasing the value of [Formula: see text], the distribution of the displacement field extends from radial to tangent direction, especially in the lower mode numbers; this phenomenon appears much more remarkable. A useful suggestion of this research is that for designing the graphene nanoplatelet composite circular microplate at a low value of [Formula: see text], [Formula: see text] and [Formula: see text] should be given more attention, simultaneously. An interesting result which has come down from the article is that the effect of [Formula: see text] on the dimensionless frequency of the structure is really dependent on the value of C d.

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“…Afterwards, Ghabussi et al [166,167] used this damper in frame structures to improve their seismic performance. In both the pitched roof symmetric portal frame and the mono pitch portal frame, dampers with a 30° and 60° angle were most effective at reducing energy dissipation and maintaining frame strength.…”

Section: 5 Steel Curved Dampermentioning

confidence: 99%

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Behnamfar¹,

Almohammad-albakkar²

2023

IJE

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Seismic excitation can cause significant energy to be released within structures. By using special devices, this energy can be consumed and dissipated without deforming structural members significantly. Due to this, structural damage is minimized, casualties are prevented during earthquakes, and structures are extended in their useful life. Over the past five decades, it has been widely acknowledged that steel yielding dampers are among the best energy dissipation devices. It has been stated that the hysteretic behavior of steel yielding dampers could vary slightly depending on their geometry. From a practical point of view, they are suitable for the improvement of seismic safety in new and existing structures. The purpose of this paper is to present a review related to steel yielding dampers, their development, various types, and applications, in order to help understand the role of these dampers in improving the seismic performance of structures. In terms of their shape, steel yielding dampers can be categorized as steel plate dampers, pipe dampers, curved dampers, and slit dampers. The most common use of steel plate, such as ADAS and TADAS, and pipe dampers is within braced frames, whereas U-shaped, Jshaped, and S-shaped dampers are mostly seen in frames with chevron bracing. Steel curved dampers with a 60° angle in a steel-braced frame, on the other hand, provide the best energy dissipation and frame strength. In this direction, until today, steel slit dampers have been found to be the most commonly used steel yielding dampers.

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Improving seismic performance of portal frame structures with steel curved dampers

Cited by 70 publications

References 17 publications

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi-Rigid Joints of Steel Structures Using Response Surface Method

Optimal Evaluation of the Rheological Parameters for STF Dampers in Semi-Rigid Joints of Steel Structures Using Response Surface Method

Frequency characteristics of a viscoelastic graphene nanoplatelet–reinforced composite circular microplate

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

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