Optimization of location and forces of friction dampers

Ontiveros-Pérez, Sergio Pastor; Miguel, Letícia Fleck Fadel; Miguel, Leandro Fleck Fadel

doi:10.1590/0370-44672015700065

Cited by 9 publications

(7 citation statements)

References 9 publications

(9 reference statements)

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“…It can also be applied to seismic building structures. This friction can also be used, on a smaller scale, to absorb kinetic motion energy [63][64][65]. As such, Pall et al (1980) developed passive FDs to improve a structure's seismic responses.…”

Section: Friction Dampersmentioning

confidence: 99%

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Review of Magnetorheological Damping Systems on a Seismic Building

et al. 2021

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Building structures are vulnerable to the shocks caused by earthquakes. Buildings that have been destroyed by an earthquake are very detrimental in terms of material loss and mental trauma. However, technological developments now enable us to anticipate shocks from earthquakes and minimize losses. One of the technologies that has been used, and is currently being further developed, is a damping device that is fitted to the building structure. There are various types of damping devices, each with different characteristics and systems. Multiple studies on damping devices have resulted in the development of various types, such as friction dampers (FDs), tuned mass dampers (TMDs), and viscous dampers (VDs). However, studies on attenuation devices are mostly based on the type of system and can be divided into three categories, namely passive, active, and semi-active. As such, each type and system have their own advantages and disadvantages. This study investigated the efficacy of a magnetorheological (MR) damper, a viscous-type damping device with a semi-active system, in a simulation that applied the damper to the side of a building structure. Although MR dampers have been extensively used and developed as inter-story damping devices, very few studies have analyzed their models and controls even though both are equally important in controlled dampers for semi-active systems. Of the various types of models, the Bingham model is the most popular as indicated by the large number of publications available on the subject. Most models adapt the Bingham model because it is the most straightforward of all the models. Fuzzy controls are often used for MR dampers in both simulations and experiments. This review provides benefits for further investigation of building damping devices, especially semi-active damping devices that use magnetorheological fluids as working fluids. In particular, this paper provides fundamental material on modeling and control systems used in magnetorheological dampers for buildings. In fact, magnetorheological dampers are no less attractive than other damping devices, such as tuned mass dampers and other viscous dampers. Their reliability is related to the damping control, which could be turned into an interesting discussion for further investigation.

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Section: Friction Dampersmentioning

confidence: 99%

“…There are three types of control systems for building structures: passive, active, and semi-active or hybrid systems. Although passive control systems have been extensively studied [62], active and semi-active systems have also been investigated as a control for structures [63].…”

Section: Introductionmentioning

confidence: 99%

Review of Magnetorheological Damping Systems on a Seismic Building

et al. 2021

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“…For this reason, continuous function 2 ( 2 V) = tanh( 2 V) with 2 = 1 × 10 50 was implemented, which was proposed by Mostaghel and Davis [23] and represents discontinuity of Coulomb friction force, where 2 is parameter that controls level of accuracy of function representing friction force. The continuous function 2 was already used in previous studies, for example, [14][15][16][17][18][19]22].…”

Section: Optimization Problemmentioning

confidence: 99%

“…In literature it is possible to find several papers about optimization of Tuned Mass Dampers (TMD), as, for instance, [7][8][9][10][11][12][13]. On the other hand, few works about optimization of friction dampers are found in literature, for example, [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A New Assessment in the Simultaneous Optimization of Friction Dampers in Plane and Spatial Civil Structures

Ontiveros-Pérez

Miguel

2017

Mathematical Problems in Engineering

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This paper presents a methodology to improve installation of friction dampers in civil structures subjected to artificial and real earthquakes using a metaheuristic optimization technique. The Firefly Algorithm is used in this work and it is linked with a computational routine based on Finite Differences Method to solve simultaneous optimization of friction dampers problem. The methodology is implemented for two kinds of structures: a 2D steel frame building and a 3D concrete frame building. The scope of this study is to reduce two different objective functions: (i) the maximum displacement at the top of a structure and (ii) maximum interstorey drift. The results showed that the methodology was able to reduce two objective functions and it can be recommended as an efficient tool to project optimal fiction dampers.

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“…Recently, a rapid increase in the development and application of passive energy dissipation devices, such as base isolation systems [2], viscoelastic dampers [3,4], friction dampers [5][6][7][8][9][10][11][12][13][14][15], and tuned mass dampers , has occurred. Passive control systems are designed to minimize the structural response under dynamic action without using an external power source.…”

Section: Introductionmentioning

confidence: 99%

Robust Optimum Design of Multiple Tuned Mass Dampers for Vibration Control in Buildings Subjected to Seismic Excitation

Vellar

Ontiveros-Pérez

Miguel

et al. 2019

Shock and Vibration

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Passive energy devices are well known due to their performance for vibration control in buildings subjected to dynamic excitations. Tuned mass damper (TMD) is one of the oldest passive devices, and it has been very much used for vibration control in buildings around the world. However, the best parameters in terms of stiffness and damping and the best position of the TMD to be installed in the structure are an area that has been studied in recent years, seeking optimal designs of such device for attenuation of structural dynamic response. Thus, in this work, a new methodology for simultaneous optimization of parameters and positions of multiple tuned mass dampers (MTMDs) in buildings subjected to earthquakes is proposed. It is important to highlight that the proposed optimization methodology considers uncertainties present in the structural parameters, in the dynamic load, and also in the MTMD design with the aim of obtaining a robust design; that is, a MTMD design that is not sensitive to the variations of the parameters involved in the dynamic behavior of the structure. For illustration purposes, the proposed methodology is applied in a 10-story building, confirming its effectiveness. Thus, it is believed that the proposed methodology can be used as a promising tool for MTMD design.

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Optimization of location and forces of friction dampers

Cited by 9 publications

References 9 publications

Review of Magnetorheological Damping Systems on a Seismic Building

Review of Magnetorheological Damping Systems on a Seismic Building

A New Assessment in the Simultaneous Optimization of Friction Dampers in Plane and Spatial Civil Structures

Robust Optimum Design of Multiple Tuned Mass Dampers for Vibration Control in Buildings Subjected to Seismic Excitation

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