A decentralized response-dependent MR damper for controlling building structures excited by seismic load

Abstract

In this study, a decentralized algorithm for operating a semiactive MR damper was presented. The frictional force of the MR damper was determined based on the assumed shape functions using the displacement and velocity of the damper piston itself. The seismic response control performance of the MR damper was numerically and experimentally evaluated and compared to that of the passively or semiactively operated MR damper. The results from numerical analysis of SDOF system indicated that passively operated MR damper to have an optimal frictional force less than about 30% of the base shear force provided the smallest displacement response spectrum over all the periods. The proposed MR damper showed the better performance in reducing the absolute acceleration with the larger frictional force than the passive one. Also, the results from a three-storey benchmark building indicated that the proposed decentralized MR damper provided control performance equivalent to or better than the performance shown by the semiactive MR damper using a centralized LQR algorithm. Finally, the effectiveness of the proposed MR damper was verified through experimental tests of a full-scale five-storey steel structure with the MR dampers.

Keywords

seismic load magnetorheological decentralized control

Get full access to this article

View all access options for this article.

References

Cho

Jung

Lee

(2005) “Smart Passive System Based on Magnetorheological Damper. Smart Materials and Structures 14: 707–714.

Choi

Hong

Sung

Sohn

(2008) “Optimal Control of Structural Vibrations Using a Mixed-Mode Magnetorheological Fluid Mount. International Journal of Mechanical Sciences 50: 559–568.

Dyke

Spencer

Sain

Carlson

(1996) “Modeling and Control of Magnetorheological Dampers for Seismic Response Reduction. Smart Materials and Structures 5: 565–575.

Dyke

Spencer

Jr Sain

Carlson

(1998) “An Experimental Study of MR Dampers for Seismic Protection”. Smart Materials and Structures 7(5): 693–703.

Gamota

Filisko

(1991) “Dynamic Mechanical Studies of Electrorheological Materials: Moderate Frequencies. Journal of Rheology 35: 399–425.

Jansen

Dyke

(2000) “Semiactive Control Strategies for MR Dampers: Comparative Study. Journal of Engineering Mechanics, ASCE 126: 795–803.

Lee

Park

Lee

Min

(2008) “Allocation and Slip Load of Friction Dampers for a Seismically Excited Building Structure Based on Story Shear Force Distribution. Engineering Structures 30: 930–940.

Lee

Min

Lee

(2005) “Modified Sliding Mode Control Using Target Derivative of Lyapunov Function. Engineering Structures 27: 49–59.

Lee

Park

Lee

Youn

Min

Kim

(2006) “Forced Vibration Test for Simulating the Earthquake Response of a Real-Scaled Building Structure. Proceedings of The 8th Taiwan-Korea-Japan Joint Seminar on Earthquake Engineering for Building Structures, Tokyo, pp.225–246.

10.

Spencer

Dyke

Sain

Carlson

(1997) “Phenomenological Model for Magnetorheological Dampers. Journal of Engineering Mechanics, ASCE 123: 230–238.

11.

Stanway

Sproston

Stevens

(1987) “Non-Linear Modeling of an Electro-Rheological Vibration Damper. Journal of Electrostatics 20: 167–184.

12.

Wen

(1976) “Method of Random Vibration of Hysteretic Systems. Journal of Engineering Mechanics Division, ASCE 102: 249–263.

13.

Wereley

Pang

Kamath

(1998) “Idealized Hysteresis Modeling of Electrorheological and Magnetorheological Dampers. Journal of Intelligent Material Systems and Structures 9: 642–649.

14.

Shen

(2003) “Intelligent Bi-state Control for the Structure with Magnetorheological Dampers. Journal of Intelligent Material Systems and Structures 14: 35–42.

15.

Guo

(2006) “Fuzzy Control Method for Earthquake Mitigation Structures with Magnetorheological Dampers. Journal of Intelligent Material Systems and Structures 17: 871–881.

16.

Guo

(2008) “Neuro-Fuzzy Control Strategy for Earthquake-Excited Nonlinear Magnetorheological Structures. Soil Dynamics and Earthquake Engineering 28: 717–727.

17.

Yang

Spencer

Carlson

Sain

(2002) “Large-scale MR Fluid Damper: Modeling and Dynamic Performance Considerations. Engineering Structures 24: 309–323.

18.

Choi

Dong

Liao

(2009) “Fuzzy Neural Network Control for Vehicle Stability Utilizing Magnetorheological Suspension System”. Journal of Intelligent Material Systems and Structures 20: 457–466.