Shaking table tests on Semi-active base-isolation system by Magnetorheological Fluid damper

Takeshi Hiwatashi; Yoichi Shiozaki; Hideo Fujitani; Chikahiro Minowa; Satsuya Soda

doi:10.1117/12.483452

Shaking table tests on Semi-active base-isolation system by Magnetorheological Fluid damper

Takeshi Hiwatashi^*, Yoichi Shiozaki, Hideo Fujitani, Chikahiro Minowa, Satsuya Soda

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Recent study is to the performance of variable dampers for reducing earthquake response of buildings or wind induced sway. The variable damper using magnetorheological fluid (MR damper) changes its damping force by changing the magnetic field acting on the MR fluid according to an electric current. MR dampers have a simple mechanism and don't need a large amount of energy. Semi-active control using such a variable damper stabilizes building responses in an earthquake better than the conventional passive control. Basic characteristics of the MR damper have been clarified.This time, authors proposed control algorithm of base-isolated structure, which carried out semi-active control by optimal regulator theory. This control algorithm reduces response displacement and response acceleration for the purpose of, and aims at enhancements, such as safety and amenity. This paper presents a comprehensive study on the performance of the MR damper to base-isolated structure. It's describes shaking table tests on a three-story large-scale test frame with base-isolated structure. The test results verify the controlling system and the control effect as a semi-active device of the MR damper.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	400-411
Number of pages	12
Volume	5056
DOIs	https://doi.org/10.1117/12.483452
Publication status	Published - 2003
Event	Smart Structures and Materials 2003: Smart Structures and Integrated Systems - San Diego, CA, United States Duration: 2003 Mar 3 → 2003 Mar 6

Other

Other	Smart Structures and Materials 2003: Smart Structures and Integrated Systems
Country/Territory	United States
City	San Diego, CA
Period	03/3/3 → 03/3/6

Keywords

Base-isolated structure
Bingham visco-plastic model
MR damper
Optimal regulator theory
Semi-active control
Shaking table tests

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1117/12.483452

Cite this

Hiwatashi, T, Shiozaki, Y, Fujitani, H, Minowa, C & Soda, S 2003, Shaking table tests on Semi-active base-isolation system by Magnetorheological Fluid damper. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 5056, pp. 400-411, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, San Diego, CA, United States, 03/3/3. https://doi.org/10.1117/12.483452

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abstract = "Recent study is to the performance of variable dampers for reducing earthquake response of buildings or wind induced sway. The variable damper using magnetorheological fluid (MR damper) changes its damping force by changing the magnetic field acting on the MR fluid according to an electric current. MR dampers have a simple mechanism and don't need a large amount of energy. Semi-active control using such a variable damper stabilizes building responses in an earthquake better than the conventional passive control. Basic characteristics of the MR damper have been clarified.This time, authors proposed control algorithm of base-isolated structure, which carried out semi-active control by optimal regulator theory. This control algorithm reduces response displacement and response acceleration for the purpose of, and aims at enhancements, such as safety and amenity. This paper presents a comprehensive study on the performance of the MR damper to base-isolated structure. It's describes shaking table tests on a three-story large-scale test frame with base-isolated structure. The test results verify the controlling system and the control effect as a semi-active device of the MR damper.",

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year = "2003",

doi = "10.1117/12.483452",

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AU - Soda, Satsuya

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AB - Recent study is to the performance of variable dampers for reducing earthquake response of buildings or wind induced sway. The variable damper using magnetorheological fluid (MR damper) changes its damping force by changing the magnetic field acting on the MR fluid according to an electric current. MR dampers have a simple mechanism and don't need a large amount of energy. Semi-active control using such a variable damper stabilizes building responses in an earthquake better than the conventional passive control. Basic characteristics of the MR damper have been clarified.This time, authors proposed control algorithm of base-isolated structure, which carried out semi-active control by optimal regulator theory. This control algorithm reduces response displacement and response acceleration for the purpose of, and aims at enhancements, such as safety and amenity. This paper presents a comprehensive study on the performance of the MR damper to base-isolated structure. It's describes shaking table tests on a three-story large-scale test frame with base-isolated structure. The test results verify the controlling system and the control effect as a semi-active device of the MR damper.

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KW - Optimal regulator theory

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KW - Shaking table tests

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Shaking table tests on Semi-active base-isolation system by Magnetorheological Fluid damper

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