21109 Excitation Experiment and Response Analysis for Small Base Isolation System using Friction Bearing

2013 ◽  
Vol 2013.19 (0) ◽  
pp. 513-514
Author(s):  
Mikito KEZUKA ◽  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Yuji NAKANISHI ◽  
Kazutoshi TOMINAGA ◽  
...  
Keyword(s):  
Base Isolation ◽  
Response Analysis ◽  
Isolation System ◽  
Friction Bearing ◽  
Base Isolation System ◽  
Small Base

1823 Development of small base isolation system using friction bearing : Part 3 Effects of bearing shape on the small base isolation system

2012 ◽  
Vol 2012.18 (0) ◽  
pp. 549-550
Author(s):  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Yuji NAKANISHI ◽  
Kazutoshi TOMINAGA ◽  
Mitsuo KANAZAWA ◽  
...  
Keyword(s):  
Base Isolation ◽  
Isolation System ◽  
Friction Bearing ◽  
Base Isolation System ◽  
Small Base ◽  
Bearing Part

scholarly journals Reduction Performance of Seismic Response on Small Base Isolation System Using Friction Bearing and Its Evaluation

2013 ◽  
Vol 79 (801) ◽  
pp. 1247-1255
Author(s):  
Mikito KEZUKA ◽  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Yuji NAKANISHI ◽  
Kazutoshi TOMINAGA ◽  
...  
Keyword(s):  
Seismic Response ◽  
Base Isolation ◽  
Isolation System ◽  
Friction Bearing ◽  
Base Isolation System ◽  
Small Base

Reduction of Seismic Response of Mechanical System by Base Isolation System With Friction Bearing

2007 ◽  
Author(s):  
Shigeru Aoki ◽  
Yuji Nakanishi ◽  
Kazutoshi Tominaga ◽  
Takeshi Otaka ◽  
Tadashi Nishimura ◽  
...  
Keyword(s):  
Mechanical System ◽  
Seismic Response ◽  
Base Isolation ◽  
Low Frequency ◽  
Simulation Method ◽  
Shaking Table ◽  
Restoring Force ◽  
Isolation System ◽  
Friction Bearing ◽  
Base Isolation System

Reduction of seismic response of mechanical system is important problem for aseismic design. Some types of base isolation systems are developed and used in actual base of buildings and floors in buildings for reduction of seismic response of mechanincal system. In this paper, a base isolation system utilizing bearing with friction and restoring force of bearing is proposed. Friction bearing consists of two plates having spherical concaves and oval type metal or spherical metal with rubber. First, effectiveness of the base isolation system is examined experimentally. Using artificial time histories, the isolated table is shaken on the shaking table. The maximum value of response is reduced and sum of squares of response is significantly reduced. Power spectrum is significantly reduced in almost of all frequency regions, except for very low frequency region. Next, in order to examine reduction of seismic response of actual mechanical system, a console rack is set on the isolated plate. Seismic response is also significantly reduced. Finally, obtained results of experiment are examined by simulation method. An analytical model considering friction and restoring force is used. From simulation method, effectiveness of the proposed base isolation system is demonstrated.

20418 Modeling of Small Base Isolation System using Friction Bearings

2015 ◽  
Vol 2015.21 (0) ◽  
pp. _20418-1_-_20418-2_
Author(s):  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Yuji NAKANISHI ◽  
Kazutoshi TOMONAGA ◽  
Mitsuo KANAZAWA
Keyword(s):  
Base Isolation ◽  
Isolation System ◽  
Base Isolation System ◽  
Small Base ◽  
Friction Bearings

21112 Vibration analysis of small base isolation system using friction bearings : Effects of eccentricity on seismic response

2013 ◽  
Vol 2013.19 (0) ◽  
pp. 519-520
Author(s):  
Katsumi Kurita ◽  
Shigeru Aoki ◽  
Yuji Nakanishi ◽  
Kazutoshi Tominaga ◽  
Mitsuo Kanazawa ◽  
...  
Keyword(s):  
Seismic Response ◽  
Vibration Analysis ◽  
Base Isolation ◽  
Isolation System ◽  
Base Isolation System ◽  
Small Base ◽  
Friction Bearings

G101041 Effects of Friction Bearing Type on Response Characteristic of Base Isolation System for Equipment

2013 ◽  
Vol 2013 (0) ◽  
pp. _G101041-1-_G101041-5
Author(s):  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Mikito KEZUKA ◽  
Yuuji NAKANISHI ◽  
Kazutoshi TOMINAGA ◽  
...  
Keyword(s):  
Base Isolation ◽  
Response Characteristic ◽  
Isolation System ◽  
Friction Bearing ◽  
Base Isolation System

Nonlinear Seismic Response Analysis of Parallel Base-Isolated System

2012 ◽  
Vol 256-259 ◽  
pp. 2254-2257
Author(s):  
Q. Rong
Keyword(s):  
Base Isolation ◽  
Time History ◽  
Treatment Method ◽  
Response Analysis ◽  
Hysteretic Model ◽  
Isolation System ◽  
Nonlinear Seismic Response ◽  
History Analysis ◽  
Base Isolation System ◽  
Single Mass

Based on the bilinear hysteretic model, the elastic-plastic time history analysis of single mass point for parallel base isolation system is carried out. The approximate treatment method of the inflexion point is introduced and the formula of each energy consumption for parallel base-isolated structure is given. Through an engineering example, the time history curve of each energy dissipation for parallel base-isolated system is drawn, and the isolation effect is given.

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