DYNAMIC ANALYSIS OF A TALL BUILDING WITH A TUNED-MASS-DAMPER DEVICE SUBJECTED TO EARTHQUAKE EXCITATIONS

2001 ◽  
Vol 244 (1) ◽  
pp. 123-136 ◽  
Author(s):  
A.-P. WANG ◽  
R.-F. FUNG ◽  
S.-C. HUANG
Keyword(s):  
Dynamic Analysis ◽  
Tuned Mass Damper ◽  
Tall Building ◽  
Mass Damper

Improving performance of a super tall building using a new eddy-current tuned mass damper

2016 ◽  
Vol 24 (3) ◽  
pp. e1882 ◽  
Author(s):  
Xilin Lu ◽  
Qi Zhang ◽  
Dagen Weng ◽  
Zhiguang Zhou ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Eddy Current ◽  
Tuned Mass Damper ◽  
Tall Building ◽  
Mass Damper

scholarly journals Performance of TMDI for Tall Building Damping

Actuators ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 139
Author(s):  
Felix Weber ◽  
Peter Huber ◽  
Fredrik Borchsenius ◽  
Christian Braun
Keyword(s):  
Mass Matrix ◽  
Vibration Reduction ◽  
Tuned Mass Damper ◽  
Tall Building ◽  
Realistic Case ◽  
Absolute Acceleration ◽  
The Earth ◽  
Mass Damper ◽  
The Absolute ◽  
Bending Modes

This study investigates the vibration reduction of tall wind-excited buildings using a tuned mass damper (TMD) with an inerter (TMDI). The performance of the TMDI is computed as a function of the floor to which the inerter is grounded as this parameter strongly influences the vibration reduction of the building and for the case when the inerter is grounded to the earth whereby the absolute acceleration of the corresponding inerter terminal is zero. Simulations are made for broadband and harmonic excitations of the first three bending modes, and the conventional TMD is used as a benchmark. It is found that the inerter performs best when grounded to the earth because, then, the inerter force is in proportion to the absolute acceleration of only the pendulum mass, but not to the relative acceleration of the two inerter terminals, which is demonstrated by the mass matrix. However, if the inerter is grounded to a floor below the pendulum mass, the TMDI only outperforms the TMD if the inerter is grounded to a floor within approximately the first third of the building’s height. For the most realistic case, where the inerter is grounded to a floor in the vicinity of the pendulum mass, the TMDI performs far worse than the classical TMD.

Critical mode control of a wind-loaded tall building using an active tuned mass damper

1997 ◽  
Vol 19 (10) ◽  
pp. 834-842 ◽  
Author(s):  
L.E. Mackriell ◽  
K.C.S. Kwok ◽  
B. Samali
Keyword(s):  
Tuned Mass Damper ◽  
Tall Building ◽  
Critical Mode ◽  
Mode Control ◽  
Mass Damper

scholarly journals LQG Control of Along-Wind Response of a Tall Building with an ATMD

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ki-Pyo You ◽  
Jang-Youl You ◽  
Young-Moon Kim
Keyword(s):  
Damping Ratio ◽  
Tall Buildings ◽  
Tuned Mass Damper ◽  
Wind Load ◽  
Tall Building ◽  
Structural Safety ◽  
Design Parameters ◽  
Random Load ◽  
Mass Damper ◽  
Wind Response

Modern tall buildings use lighter construction materials that have high strength and less stiffness and are more flexible. Although this results in the improvement of structural safety, excessive wind-induced excitations could lead to occupant discomfort. The optimal control law of a linear quadratic Gaussian (LQG) controller with an active tuned mass damper (ATMD) is used for reducing the along-wind response of a tall building. ATMD consists of a second mass with optimum parameters for tuning frequency and damping ratio of the tuned mass damper (TMD), under the stationary random load, was used. A fluctuating along-wind load, acting on a tall building, was treated as a stationary Gaussian white noise and was simulated numerically, in the time domain, using the along-wind load spectra proposed by G. Solari in 1993. Using this simulated wind load, it was possible to calculate the along-wind responses of a tall building (with and without the ATMD), using an LQG controller. Comparing the RMS (root mean square) response revealed that the numerically simulated along-wind responses, without ATMD, are a good approximation to the closed form response, and that the reduced responses with ATMD and LQG controller were estimated by varying the values of control design parameters.

LQG Control of Along-Wind Responses of Tall Building Using Composite Tuned Mass Dampers

2016 ◽  
Vol 723 ◽  
pp. 753-759
Author(s):  
Young Moon Kim ◽  
Ki Pyo You ◽  
Jang Youl You ◽  
Sun Young Paek ◽  
Byung Hee Nam
Keyword(s):  
Tuned Mass Damper ◽  
Wind Load ◽  
Tall Building ◽  
Control Force ◽  
Load Spectrum ◽  
Linear Quadratic ◽  
Tuned Mass Dampers ◽  
Optimum Parameters ◽  
Mass Damper ◽  
Wind Induced Vibration

A composite tuned mass damper(CTMD) is a vibration control device consisting of an active-passive tuned mass dampers supported on the primary vibrating structure. The performance of CTMD in mitigating wind-induced vibration of tall building is investigated. Optimum parameters of a passive tuned mass damper(PTMD)for minimizing the variance response of the damped primary structure under random loads, with different mass ratio of an active tuned mass damper(ATMD) to a PTMD have been used for the optimum parameters of CTMD. The active control force generated by ATMD actuator was estimated by using linear quadratic Gaussian(LQG) controller, and the fluctuating along-wind load, treated as a stationary random process ,was simulated numerically using the along-wind load spectrum proposed by Solari .Comparing the along-wind rms response of tall building without a CTMD, the CTMD is effective in reducing the response to 40%~45% of the response without the CTMD. Therefore, the CTMD system was effective in reducing wind-induced vibration of tall building.

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