scholarly journals Vibration Control Devices for Building Structures and Installation Approach: A Review

2019 ◽  
Vol 29 (2) ◽  
pp. 74-100 ◽  
Author(s):  
Waseem Sarwar ◽  
Rehan Sarwar
Keyword(s):  
Energy Dissipation ◽  
Vibration Control ◽  
Passive Control ◽  
Search Algorithm ◽  
Structural Response ◽  
Building Structures ◽  
Analysis And Design ◽  
Control Devices ◽  
Energy Dissipation Devices ◽  
Energy Absorbing

Abstract Retrofit and structural design with vibration control devices have been proven repeatedly to be feasible seismic hazard mitigation approach. To control the structural response; supplemental energy dissipation devices have been most commonly used for energy absorption. The passive control system has been successfully incorporated in mid to high rise buildings as an appropriate energy absorbing system to suppress seismic and wind-induced excitation. The considerable theses that are highlighted include vibration control devices, the dynamic behavior of devices; energy dissipation mechanism, devices installation approach and building guidelines for structural analysis and design employing vibration control devices also, design concern that is specific to building with vibration control devices. The following four types of supplemental damping devices have been investigated in this review: metallic devices, friction devices, viscous fluid devices, and viscoelastic devices. Although numerous devices installation techniques available, more precisely, devices installation approaches have been reviewed in this paper, including Analysis and Redesign approach (Lavan A/R), standard placement approach, simplified sequential search algorithm, and Takewaki approach.

Experimental Study for a New Energy Dissipation Device: Multiple-Direction Damper

2002 ◽  
Author(s):  
C. S. Tsai ◽  
L. L. Chung ◽  
T. C. Chiang ◽  
B. J. Chen ◽  
W. S. Chen
Keyword(s):  
Energy Dissipation ◽  
Passive Control ◽  
Steel Structure ◽  
Experimental Results ◽  
Shaking Table ◽  
New Energy ◽  
Seismic Loadings ◽  
Control Technologies ◽  
Energy Dissipation Devices ◽  
Energy Absorbing

The way of passive control technologies has been recognized as an excellent method to mitigate seismic responses of structures during seismic excitations. In general, the energy dissipation devices based on their own mechanical property can be divided into two categories, which are velocity-dependent and displacement-dependent devices. In this study, a new displacement-dependent device which is called multiple-direction damper is proposed. The proposed damper has numerous advantages: (1) the fabrication of this energy-absorbing device is effortless; (2) the construction of the energy-absorbing system is easy; (3) it is simple to install the device into a structure; (4) the material used for this damper is easy to obtain; and (5) if any damage occurs in this damper during strong excitations, this energy-absorbing device can be replaced easily to recover its energy dissipation capacity. Experimental results from component tests show that the proposed damper provides significant energy-absorbing capacity. Furthermore, the multiple-direction dampers have also been equipped into a 5-story steel structure to demonstrate its efficiency on seismic mitigation. The experimental results from shaking table tests indicate that most of earthquake-induced energy imparted into the structure is dissipated by the proposed dampers. In the meanwhile, the seismic loadings imposing on the structure with devices can be reduced effectively as compared with those of the bare structure. Therefore, the multiple-direction damper can be recognized as an effective tool to assure the safety of structure under strong ground motions.

scholarly journals Editorial for Special Issue “Energy Dissipation and Vibration Control: Materials, Modeling, Algorithm, and Devices”

2020 ◽  
Vol 10 (2) ◽  
pp. 572 ◽  
Author(s):  
Gangbing Song ◽  
Hong-Nan Li ◽  
Steve C.S. Cai
Keyword(s):  
Energy Dissipation ◽  
Vibration Control ◽  
Active Vibration Control ◽  
Vibration Damping ◽  
Dynamic Responses ◽  
Special Issue ◽  
The Arts ◽  
Materials Modeling ◽  
Active Vibration ◽  
Energy Dissipation Devices

Many engineering systems, from subsea pipelines to space structures, from moving vehicles to stationary skyscrapers, are subject to unwanted vibration excitations. Often vibration control can be considered as a problem of energy dissipation and vibration damping. The aims of this issue are to accumulate, disseminate, and promote new knowledge about vibration control, especially for topics related to energy dissipation methods for vibration damping. Topics in this issue reflect the start-of-the-arts in the field of vibration control, such as inerter dampers and pounding tuned mass dampers (PTMDs). This special issue also reports other types of new energy dissipation devices, including a multi-unit particle damper, a nonlinear eddy current damper, and layered dampers. Also reported in this issue are structural elements with innovative designs to dissipate energy. In addition, this special issue also reports two research studies on the dynamic responses of a structural foundation and an earth-retaining structure. Though most papers in this special issue are related to passive methods, one paper reports a semi-active vibration control via magnetorheological dampers (MRDs), and another two papers report active vibration controls using piezoelectric transducers and inertial actuators, respectively.

Research on a New Type of Energy Dissipation Brace

2011 ◽  
Vol 71-78 ◽  
pp. 3816-3820
Author(s):  
Jie Yjing Sui ◽  
Wen Feng Liu
Keyword(s):  
Energy Dissipation ◽  
Dynamic Response ◽  
Vibration Control ◽  
Dynamic Behavior ◽  
Control Test ◽  
Magnification Factor ◽  
New Type ◽  
Energy Dissipation Devices

This paper presents one new configuration called little-character-toggle-brace. This paper analyses the effect of different toggle-brace position in the story and different angle of the toggle-brace to the magnification factor and provides the damping radio of the structure. Based on vibration control test of the structure with energy dissipation devices, the dynamic behavior and dynamic response of the structure with little-character brace, diagonal brace or little-character- toggle-brace have been investigated. The different control effects of the structure with the different energy dissipation braces have been studied. The result demonstrates that the little-character-toggle- brace is the best energy dissipation brace.

Viscoelastic Dampers as Energy Dissipation Devices for Seismic Applications

1993 ◽  
Vol 9 (3) ◽  
pp. 371-387 ◽  
Author(s):  
K. C. Chang ◽  
T. T. Soong ◽  
M. L. Lai ◽  
E. J. Nielsen
Keyword(s):  
Performance Enhancement ◽  
Design Procedure ◽  
Structural Response ◽  
Experimental Investigations ◽  
Building Structures ◽  
Structural Damping ◽  
Modal Strain Energy ◽  
Viscoelastic Dampers ◽  
Energy Dissipation Devices ◽  
Analytical Tools

On the basis of extensive analytical and experimental investigations, some practical issues associated with the application of viscoelastic dampers to building structures for seismic performance enhancement are considered. It is first shown that the seismic response of a structure can be significantly improved with added dampers. Even at high temperatures, results show that a viscoelastically damped structure can still achieve a significant reduction of structural response as compared to the case with no dampers added. The development of a design procedure for viscoelastic dampers by taking into account the ambient temperature is addressed next, following a modal strain energy approach. Numerical simulation on equivalent structural damping and structural response confirms that the dynamic behavior of structures with added viscoelastic dampers can be satisfactorily predicted by conventional analytical tools. In addition, the design of structures with added viscoelastic dampers can be easily incorporated into a conventional design process.

scholarly journals The seismic performance of energy absorbing dampers in building structures

1984 ◽  
Vol 17 (1) ◽  
pp. 38-46 ◽  
Author(s):  
D. E. Key
Keyword(s):  
Seismic Performance ◽  
Dynamic Properties ◽  
Structural Response ◽  
Time History ◽  
Shear Walls ◽  
Building Structures ◽  
Floor Level ◽  
Response Characteristics ◽  
History Analysis ◽  
Energy Absorbing

By separating the stiff shear walls of the structural core of a building from the more flexible column/beam/slab structure two independent structures with markedly different dynamic properties are formed. By introducing damping elements between the two, energy is absorbed during earthquakes, giving consider- ably improved response characteristics. A ten storey office structure incorporating dampers in this fashion is studied by time history analysis, using five simulated earthquakes. Dampers are provided at each floor level. The analysis treats the damping as hysteretic, based on the type described by Kelly (1972). Significant reductions in structural response are achieved by this means.

scholarly journals Modeling, analysis and seismic design of structures using energy dissipators SLB

2019 ◽  
Vol 29 (2) ◽  
Author(s):  
Luis Miguel Bozzo
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Structural Damage ◽  
Structural Response ◽  
Reinforced Concrete Building ◽  
Seismic Code ◽  
Wide Range ◽  
Concrete Building ◽  
Energy Dissipators ◽  
Energy Dissipation Devices

This paper initially describes aspects of the modeling of structures equipped with energy dissipators Shear Link Bozzo (SLB) and develops two iterative design procedures to select these devices. This methodology is applied to a precast 5-story reinforced concrete building. The SLB energy dissipation devices are initially stiff, but ductile with a range of yielding forces from 36 kN to 900 kN characterized by 52 + 52 standard devices. Moreover, these devices can be combined in parallel giving a very wide range of possibilities for selection and corresponding structural response. Therefore, to simplify its automatic selection, this article presents two procedures: (1) direct iteration and (2) inverse or fixed force iteration. Both procedures were implemented in an automatic application or “plugin” for the ETABS program that automates its selection for a specific structural system or architectural configuration of these elements. Using these devices, the energy introduced by an earthquake into the structure can be dissipated, protecting other structural elements that suffer damage. The SLB energy dissipation devices are affordable to get a significant performance improvement in the overall structural response. This work presents a five-story precast reinforced concrete building frame, called SLB Building, that provides 4 departments per level all with a diaphanous interior floor. The building is made up of 11 columns with a constant 40x40cm section and all its beams have hinges at the ends. This building was equipped with 120 small SLB devices showing its performance for the maximum earthquake of Peruvian seismic code without ductility reduction (R = 1) by means of nonlinear time history with ten seismic records compatible with the S1 soil spectrum. In this structure, all seismic energy dissipation was concentrated in these devices so there would be no structural damage. In addition, the levels of non-structural damage were controlled with initial stiffness of these devices since lateral displacements were reduced to levels below the Peruvian seismic code (or even immediate occupancy for devices greater than those provided in this example). At the same time, the levels of acceleration decrease in height to only 0.3g and the base shear coefficient is reduced from almost 1.2 to only 0.12-0.2 (this means an R factor between 6 and 10 without structural damage).

Stochastic analysis of structures with passive seismic control

1995 ◽  
Vol 22 (5) ◽  
pp. 970-980 ◽  
Author(s):  
Mahesh D. Pandey
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Stochastic Analysis ◽  
Structural Damage ◽  
Passive Control ◽  
Building Design ◽  
Equivalent Linearization ◽  
Building Structures ◽  
Restoring Force ◽  
Control Devices

In modern building design, the installation of passive control devices such as friction cross-bracings and viscoelastic dampers is considered an attractive option for controlling structural damage due to an earthquake. These control devices, like safety valves, allow earthquake energy dissipation at purposely designed locations such that ductility demands on other structural members are greatly reduced. The paper presents a nonlinear stochastic analysis procedure for large building structures equipped with passive control devices using the method of equivalent linearization. A generalization of this method, based on the Monte Carlo simulation technique, is elaborated for linearizing a multidimensional hysteretic restoring force law in a manner compatible with existing finite element programs. To illustrate the procedure, response statistics of a nonlinear oscillator, a friction damped structure, and a 10-storey building subjected to random excitation are analyzed. The study highlights that friction connections are useful in controlling seismic response of building structures. Key words: stochastic dynamics, Markov process, equivalent linearization, earthquake, passive control, Monte Carlo simulation, hysteresis, filtered white noise, covariance, friction cross-bracing.

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