Performance-Based Placement of Manufactured Viscoelastic Dampers for Design Response Spectrum

Nakamura, Yutaka; Hanzawa, Tetsuya; Nomura, Takayoshi; Takada, Tomokazu

doi:10.3389/fbuil.2016.00010

Cited by 11 publications

(11 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…16. Figure 17 shows a viscoelastic damper utilizing highdamping rubber (Nakamura et al 2016). The highdamping rubber is inserted between steel plates.…”

Section: Foremost Response Control Dampersmentioning

confidence: 99%

Review on seismic isolation and response control methods of buildings in Japan

Nakamura

Okada

2019

Geoenviron Disasters

Self Cite

View full text Add to dashboard Cite

This manuscript reviews seismic isolation and response control methods of buildings, which are able to make buildings resilient against earthquakes and have become popular during the last three decades in Japan. Seismic isolation is a method of protecting a building from major earthquakes by installing isolators and energy absorbing devices under the superstructure. The manuscript describes three types of laminated rubber bearings and three kinds of damping devices. Seismic isolation provides not only structural safety, but also safety and security for people and properties in the building. Seismic isolation is also used for the retrofit of historic buildings. Response control methods utilize various kinds of dampers that are installed into a building and absorb vibration energy. The manuscript explains three foremost response control dampers: the steel hysteretic damper, the viscoelastic damper and the viscous fluid damper. The effects of seismic isolation and response control methods were verified through shaking table tests, structural health monitoring and earthquake response analyses.

show abstract

“…16. Figure 17 shows a viscoelastic damper utilizing highdamping rubber (Nakamura et al 2016). The highdamping rubber is inserted between steel plates.…”

Section: Foremost Response Control Dampersmentioning

confidence: 99%

Review on seismic isolation and response control methods of buildings in Japan

Nakamura

Okada

2019

Geoenviron Disasters

Self Cite

View full text Add to dashboard Cite

show abstract

“…Low frequency dependence under cyclic dynamic loading and a better energy dissipation capacity at high loading frequency were also observed. Results from the dynamic testing of a thermoplastic elastomer of the olefin-styrene series were presented in [41]. The considered material exhibited a low temperature dependence.…”

Section: General Characteristics Of Ve Materials and New Ve Materials...mentioning

confidence: 99%

Dynamics of Structures, Frames, and Plates with Viscoelastic Dampers or Layers: A Literature Review

Lewandowski,

Litewka,

Łasecka-Plura

et al. 2023

Buildings

View full text Add to dashboard Cite

The paper is devoted to a review of recent achievements in the field of dynamic analysis of structures and structural elements, such as beams and plates, with embedded viscoelastic (VE) dampers and/or layers. The general characteristics of VE materials, their rheological models, and methods of parameters identification are discussed. New formulations of dynamic problems for systems with VE elements are also reviewed. The methods of determination of dynamic characteristics, together with the methods of analysis of steady-state and transient vibrations of such systems, are also discussed. Both linear and geometrically non-linear vibrations are considered. The paper ends with a review of the methods of sensitivity and uncertainty analysis, and the methods of optimization, for structures with VE elements.

show abstract

“…To demonstrate the adequacy of the proposed design method, the buildings installed with the necessary number of the T-EIMD units were subjected to 10 synthetic earthquake waves generated to be compatible with the given design response spectrum (Nakamura et al, 2016). Figure 13 shows the story-wise distribution of the mean peak story drift angles estimated by the time-history response analyses of the 20-and 30-story buildings with and without the T-EIMD units.…”

Section: Verification By Time-history Earthquake Response Analysesmentioning

confidence: 99%

“…Consider 20-and 30-story shear buildings with mass and story stiffness properties given in the previous study (Nakamura et al, 2016). These are based on actual high-rise buildings.…”

Section: Multistory Building Models and Design Response Spectrummentioning

confidence: 99%

“…Another past study considered the case where the T-IMDs are set to be concentrated in the lower stories , while some previous research used the SQP numerical optimization method and determined a set of optimum design parameters consisting of the inertial mass distribution, the tuning period, and the damping factor of the T-IMDs (Ikago et al, , 2011a. Here, the authors expanded the performance-based placement procedure of conventional dampers (Nakamura and Hanzawa, 2002;Nakamura et al, 2013Nakamura et al, , 2016 to the case of a tuned electromagnetic inertial mass damper (T-EIMD) that functions as a T-IMD with a large inertial mass and generates an electromagnetic damping force.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance-Based Placement Design of Tuned Electromagnetic Inertial Mass Dampers

Nakamura

Hanzawa

2017

Front. Built Environ.

Self Cite

View full text Add to dashboard Cite

This paper presents a performance-based placement design method for the control of the earthquake responses of a multistory building using tuned electromagnetic inertial mass dampers (T-EIMDs). The T-EIMD consists of a ball screw mechanism, a gear, a flywheel, and an electric generator installed in a cylinder, and a spring element connected in series. The ball screw mechanism converts the axial oscillation of the rod end into the rotational motion of the internal flywheel and generates a large inertial force. The electric generator is turned by the rotation of the inner rod and generates a variable damping force that is controlled by the terminal resistance. The T-EIMDs are installed between adjacent floors of a building with steel chevron braces and function as large tuned mass dampers within the stories. The spring element has the function of tuning the natural period of the T-EIMD to the fundamental natural period of the building. In the present work, a design procedure for the story-wise placement of T-EIMDs is proposed to limit the peak story drift angles to a specified target value. The proposed procedure utilizes the expanded complete quadratic combination method that involves modal analysis with complex eigenvalue analysis and is able to determine the necessary story-wise distribution of inertial masses of the T-EIMDs in a building. Time history earthquake response analyses are carried out for multistory building models set up with the necessary number of T-EIMD units, and the results establish the effectiveness and the adequacy of the proposed performance-based placement design procedure.

show abstract

Performance-Based Placement of Manufactured Viscoelastic Dampers for Design Response Spectrum

Cited by 11 publications

References 32 publications

Review on seismic isolation and response control methods of buildings in Japan

Review on seismic isolation and response control methods of buildings in Japan

Dynamics of Structures, Frames, and Plates with Viscoelastic Dampers or Layers: A Literature Review

Performance-Based Placement Design of Tuned Electromagnetic Inertial Mass Dampers

Contact Info

Product

Resources

About