Modal Response Characteristics of a Seismic Control Multi-Story Shear Building using a Tuned Viscous Mass Damper

2013 ◽  
Author(s):  
K. Ikago ◽  
Y. Sugimura ◽  
K. Saito ◽  
N. Inoue
Keyword(s):  
Response Characteristics ◽  
Seismic Control ◽  
Modal Response ◽  
Mass Damper ◽  
Viscous Mass ◽  
Shear Building

scholarly journals A SEISMIC CONTROL SYSTEM WITH MULTI-TUNING VISCOUS MASS DAMPER AND ITS DESIGN METHOD

2009 ◽  
Vol 74 (643) ◽  
pp. 1575-1583 ◽  
Author(s):  
Hidenori KIDA ◽  
Shigeki NAKAMINAMI ◽  
Kenji SAITO ◽  
Kohju IKAGO ◽  
Norio INOUE
Keyword(s):  
Control System ◽  
Design Method ◽  
Seismic Control ◽  
Mass Damper ◽  
Viscous Mass

scholarly journals SHAKING TABLE TEST OF SEISMIC CONTROL SYSTEM USING FORCE RESTRICTED TUNED VISCOUS MASS DAMPER

2012 ◽  
Vol 18 (39) ◽  
pp. 437-440 ◽  
Author(s):  
Masahiro IKENAGA ◽  
Taichi YOSHIKAWA ◽  
Takuya NAGASE ◽  
Kohju IKAGO ◽  
Norio INOUE
Keyword(s):  
Control System ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Seismic Control ◽  
Mass Damper ◽  
Viscous Mass

Fundamental Study of Active Mass Damper for Improving Livability of Houses Against Traffic Vibration: Substantiation Test

2004 ◽  
Author(s):  
Osamu Hasegawa ◽  
Jyunji Okabe ◽  
Toyohiko Higashida ◽  
Yukito Matsumoto
Keyword(s):  
Complex Geometry ◽  
Vibration Level ◽  
Fundamental Study ◽  
Active Mass ◽  
Target Weight ◽  
Response Characteristics ◽  
Close Proximity ◽  
Mass Damper ◽  
Active Mass Damper ◽  
External Forces

In Japan, there are many houses built in limited space as well as in close proximity to causeways and railroads, due mainly to concentration of population in the cities in recent years. Slender structures and especially 3-story houses are susceptible to vibration induced by external forces such as traffic. This effect often creates an uncomfortable environment for habitation. Because houses often have a complex geometry, it is difficult to establish the vibration characteristics of a structure. Furthermore, the response characteristics of a house will change with environmental conditions. A prototype Active Mass Damper (AMD) has been developed to address some of these issues. This has been tested in an exhibition house in Tokyo. It uses two AMD’s of 1,725N mass each for both X-axis and Y-axis. Both AMD’s are applied in X and Y directions and are installed at RooF level, they are controlled by Direct Displacement Feedback (DDFB). The test showed that the AMD could dramatically reduce vibration. Of particular note was reduction about 6dB to 8dB (L10) in the first mode of vibration even though the house mass is double the prototype target weight. Also, vibration was dramatically decreased by the AMD on 3rd floor of the house. Vibration level and comfort are important criteria for this kind of system.

Seismic Control of a Building Structure Equip with Hybrid Mass Damper Using Sliding Mode Control

2019 ◽  
pp. 146-156
Author(s):  
Normaisharah Mamat ◽  
Fitri Yakub ◽  
Sheikh Ahmad Zaki Shaikh Salim ◽  
Mohd Zamzuri Ab Rashid ◽  
Sharifah Munawarah ◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Building Structure ◽  
Seismic Control ◽  
Mode Control ◽  
Mass Damper

Passive, Semi-Active, and Active Tuned-Liquid-Column Dampers

2006 ◽  
Author(s):  
Yung-Hsiang Chen ◽  
Ying-Jan Ding
Keyword(s):  
Proper Time ◽  
Vibration Reduction ◽  
Time Instant ◽  
Liquid Column ◽  
Control Force ◽  
Earthquake Excitation ◽  
Water Head ◽  
Mass Damper ◽  
Liquid Column Dampers ◽  
Shear Building

The dynamic characteristics of the passive, semi-active, and active tuned-liquid-column dampers (or TLCD’s) are studied in this paper. The design of the latter two are based on the first one. The water-head difference of a passive TLCD is pre-set to form the so-called semi-active one in this paper. The water-head difference is released at a proper time instant during an earthquake excitation to enhance the vibration reduction of a structure. Two propellers are installed along a shaft inside and at the center of a passive TLCD to form an active one. These two propellers are driven by a servomotor controlled by a computer to provide the control force. The seismic responses of a five-story shear building with a passive, semi-active, or active TLCD are computed for demonstration and discussion. The results of this building with a tuned mass damper (or TMD) are also included for comparison.

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