Energy-based seismic retrofit and design of building frames with passive dampers

Hareen, Ch.B.V.; Mohan, S. C.

doi:10.1016/j.engstruct.2021.113412

Cited by 11 publications

(2 citation statements)

References 57 publications

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“…Once the properties of the SDOF FVD are determined, the distribution of the properties of the dampers at each story of the structure is performed depending on the displacement or the story shear [64][65][66]. The Energy-Based Design methods belong to the third group, where the properties of the FVDs to be inserted at each floor of the analyzed structure are selected based on the amount of seismic energy to be dissipated [67][68][69].…”

Section: Design Methods For Fvds In Buildingsmentioning

confidence: 99%

Current Trends in Fluid Viscous Dampers with Semi-Active and Adaptive Behavior

Zoccolini,

Bruschi,

Cattaneo

et al. 2023

Applied Sciences

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Fluid viscous dampers (FVDs) have shown their efficiency as energy-dissipating systems, reducing the effects induced on structures by dynamic loading conditions like earthquakes and winds. In this paper, the evolution of this technology is reviewed, with a focus on the current trends in development from passive to semi-active and adaptive systems and an emphasis on their advances in adaptability and control efficacy. The paper examines the implementation of semi-active FVDs such as electrorheological, magnetorheological, variable stiffness, and variable damping dampers. These devices have a high potential to mitigate the vibrations caused by earthquakes of different intensities. In addition, adaptive FVDs are presented. As semi-active devices, the adaptive ones can adjust their behavior according to the dynamic excitations’ intensity; however, they are able to do that autonomously without the use of any external equipment.

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Section: Design Methods For Fvds In Buildingsmentioning

confidence: 99%

Current Trends in Fluid Viscous Dampers with Semi-Active and Adaptive Behavior

Zoccolini,

Bruschi,

Cattaneo

et al. 2023

Applied Sciences

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“…Today, much attention is paid to the modernization and design of building frames with the use of passive dampers to dissipate the energy of external disturbances [9][10][11][12]. In recent years, a number of designs of friction dampers have been developed to improve the seismic characteristics of industrial and civil structures [13].…”

Section: Introductionmentioning

confidence: 99%

Efficient Model of the Interaction of Elastomeric Filler with an Open Shell and a Chrome-Plated Shaft in a Dry Friction Damper

et al. 2022

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The results of a study of the contact interaction of an open shell and a chrome-plated shaft with elastomeric filler installed coaxially are presented. The considered contact system is a model of the original design of the shell damper of dry friction. The design feature is the following: the bearing link of the damper is a thin-walled cylindrical shell with a cut along the generatrix; the working body of the damper is elastomeric filler; a hollow chrome-plated shaft centers the damper elements and allows it to be used in technological processes with the presence of aggressive and abrasive-containing media. The mechanical-mathematical modeling of the behavior of the presented damper under the conditions of operational loads has been carried out. The idea of identifying the properties of a cut isotropic shell, which bends under the conditions of a nonaxisymmetric contact load, and a strongly orthotropic continuous shell is applied. As a result, dependences were obtained to determine the rigidity and the maximum allowable load of the damper. The effect of the coefficient of friction of the contact pairs elastomer-shell and elastomer-shaft on the damper performance properties has been studied. A technique for the quasi-static analysis of structural damping in non-mobile, non-conservative shell systems with deforming filler has been developed. The hysteresis loops of the damper under a nonmonotonic load are constructed, the dependence of the amount of dissipated energy on the cycle asymmetry coefficient is found. An analysis of the results obtained showed that the use of open shells in friction shock absorbers can significantly reduce their rigidity compared to solid shells and thereby reduce the resonant frequencies of the dynamic system. This circumstance makes such vibration isolators particularly attractive for use in superresonance vibrators as working modules of drilling shock absorbers and elastic hangers of sucker rods in oil and gas production.

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