Seismic response reduction of a three-story building by an MR grease damper

doi:10.1007/s11465-017-0413-6

Front. Mech. Eng.

2017, Vol. 12

Issue (2) : 224-233 https://doi.org/10.1007/s11465-017-0413-6

RESEARCH ARTICLE

Seismic response reduction of a three-story building by an MR grease damper

Tomoki SAKURAI¹, Shin MORISHITA²(

)

¹. Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan
². Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan

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Abstract

This paper describes an application of magneto-rheological (MR) grease dampers as seismic dampers for a three-story steel structure. MR fluid is widely known as a smart material with rheological properties that can be varied by magnetic field strength. This material has been applied to various types of devices, such as dampers, clutches, and engine mounts. However, the ferromagnetic particles dispersed in MR fluid settle out of the suspension after a certain interval because of the density difference between the particles and their carrier fluid. To overcome this defect, we developed a new type of controllable working fluid using grease as the carrier of magnetic particles. MR grease was introduced into a cylindrical damper, and the seismic performance of the damper was subsequently studied via numerical analysis. The analysis results of the MR grease damper were compared with those of other seismic dampers. We confirmed that the MR grease damper is an effective seismic damper.

Keywords MR grease damper seismic damper vibration control structural response FEM analysis

Corresponding Author(s): Shin MORISHITA

Just Accepted Date: 14 December 2016 Online First Date: 09 January 2017 Issue Date: 19 June 2017

Cite this article:

Tomoki SAKURAI,Shin MORISHITA. Seismic response reduction of a three-story building by an MR grease damper[J]. Front. Mech. Eng., 2017, 12(2): 224-233.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-017-0413-6
https://academic.hep.com.cn/fme/EN/Y2017/V12/I2/224

Fig.1 Image of fibrous structure in grease taken with a phase contrast microscope [18]

Fig.2 Model of MR grease

Fig.3 Shear stress variation of MR grease under magnetic field

Fig.4 Schematic view of MR grease damper

Tab.1 Specification of MR grease damper (experimental model)

Fig.5 Force-displacement diagram of MR grease damper

Fig.6 FEM analysis model. (a) Model without MR grease damper; (b) model with MR grease damper

Tab.2 Specification of model structure (a three-story building)

Tab.3 Specification of MR grease dampers (numerical model)

Fig.7 Modeled force-displacement diagram of MR grease dampers

Fig.8 JMA Kobe seismic wave (NS-direction)

Tab.4 Natural frequencies of typical mode

Fig.9 Mode shapes in the X-direction in the case with normal braces. (a) 2F-side mode (3.43 Hz); (b) 3F-side mode (2.90 Hz); (c) center mode (1.96 Hz)

Fig.10 Interlayer deformation angle (FEM analysis). (a) X-direction; (b) Y-direction

Fig.11 Damage situation in the X-direction. (a) Without braces; (b) with normal braces; (c) with UB braces; (d) with MR grease damper

Fig.12 Damage situation in the Y-direction. (a) Without braces; (b) with normal braces; (c) with UB braces; (d) with MR grease damper

Fig.13 Acceleration response spectrum of JMA Kobe (z=2%) in the X-direction

Fig.14 Acceleration response spectrum of JMA Kobe (z=2%) in the Y-direction

Tab.5 Types of braces or dampers in each story of the chosen application

Fig.15 Interlayer deformation angle (case of multiple devices). (a) X-direction; (b) Y-direction

1	Takahashi O. Development and construction of three-dimensional seismic isolation building. In: Proceedings of 13th Japan Earthquake Engineering Symposium. 2010, 442–449 (in Japanese)
2	Kato R, Fujita S, Minagawa K, et al.Vibration damping of thermal power plant boiler due to earthquake by using viscous-friction hybrid dampers. In: Proceedings of Japan Society of Mechanical Engineers, Dynamics and Design Conference. 2015, 310 (in Japanese)
3	Yamano S, Matsuoka T, Hiramoto K, et al.Fluid inertia damper using MR fluid that has a long spiral by-pass pipe. In: Proceedings of Japan Society of Mechanical Engineers, Dynamics and Design Conference. 2015, 339 (in Japanese)
4	Komatsuzaki T, Iwata Y. Design of a real-time adaptively tuned dynamic vibration absorber with a variable stiffness property using magnetorheological elastomer. Shock and Vibration, 2015, 2015(568): 1–11
5	Rabinow J.The magnetic fluid clutch. Transactions of American Institute of Electrical Engineers, 1948, 67(2): 1308–1315 https://doi.org/10.1109/EE.1948.6444497
6	Carlson J D, Catanzarite D M, St. Clair K A. Commercial magneto-rheological fluid devices. International Journal of Modern Physics B, 1996, 10(23n24): 2857–2865 https://doi.org/10.1142/S0217979296001306
7	Ahn Y K, Ahmadian M,Morishita S.On the design and development of a magneto-rheological mount. Vehicle System Dynamics, 1999, 32(2–3): 199–216
8	Sodeyama H, Suzuki K, Iwata N, et al.A study on design method of the bypass type MR damper. Transactions of the Japan Society of Mechanical Engineers, Series A, 2004, 70(691): 625–632 (in Japanese) https://doi.org/10.1299/kikaic.70.625
9	Ahn Y K, Ha J H, Kim Y H, et al.Dynamic properties of a squeeze-type mount using magnetorheological fluid. Proceedings of the Institution of Mechanical Engineers, Part K. Journal of Multi-Body Dynamics, 2005, 219(1): 27–34
10	Lee C H, Lee D W, Choi J Y, et al.Tribological characteristics modification of magnetorheological fluid. Journal of Tribology, 2011, 133(3): 031801
11	Shiraishi T, Miida Y, Sugiyama S, et al.Typical characteristics of magnetorheological grease and its application to a controllable damper. Transactions of the Japan Society of Mechanical Engineers, Series A, 2011, 77(778): 2193–2200 (in Japanese) https://doi.org/10.1299/kikaic.77.2193
12	Jiang Z,Christenson R E.A fully dynamic magneto-rheological fluid damper model. Smart Materials and Structures, 2012, 21(6): 65002–65013 https://doi.org/10.1088/0964-1726/21/6/065002
13	Cha Y J, Agrawal A K,Dyke S J.Time delay effects on large-scale MR damper based semi-active control strategies. Smart Materials and Structures, 2013, 22(1): 015011 https://doi.org/10.1088/0964-1726/22/1/015011
14	Nagano Y,Nakagawa T, Suzuki K. A basic study for an elevator emergency stop device utilizing M.R. Fluid. In: Proceedings of the 15th International Conference on Electrical Machines and Systems. 2012, 1–4
15	Rahman M, Mahbubur Rashid M, Muthalif A G A, et al.Evaluation of different control policies of semi-active MR fluid damper of a quarter-car model, applied. Mechanics of Materials, 2012, 165: 310–315 https://doi.org/10.4028/www.scientific.net/AMM.165.310
16	Sugiyama S, Sakurai T, Morishita S. Vibration control of a structure using magneto-rheological grease damper. Frontiers of Mechanical Engineering, 2013, 8(3): 261–267 https://doi.org/10.1007/s11465-013-0268-4
17	Japan Society of Tribologist. Basic Knowledge of Grease and its Applications. Yokendo, 2007 (in Japanese)
18	Ohya Y, Miyamoto S, Morishita S, et al.Experimental study on visualization of grease flow. Journal of Japanese Society of Tribologists, 2011, 56(4): 248–255

[1]	Shinya SUGIYAMA, Tomoki SAKURAI, Shin MORISHITA. Vibration control of a structure using Magneto-Rheological grease damper[J]. Front Mech Eng, 2013, 8(3): 261-267.
[2]	Jinxin LIU, Xuefeng CHEN, Zhengjia HE. Frequency domain active vibration control of a flexible plate based on neural networks[J]. Front Mech Eng, 2013, 8(2): 109-117.
[3]	Jinhao QIU, Hongli JI. Research on applications of piezoelectric materials in smart structures[J]. Front Mech Eng, 2011, 6(1): 99-117.
[4]	Dan WU, Zhichun YANG, Hao SUN, . Vibration control efficiency of piezoelectric shunt damping system[J]. Front. Mech. Eng., 2009, 4(4): 441-446.
[5]	Jinhao QIU, Hongli JI, Kongjun ZHU. Semi-active vibration control using piezoelectric actuators in smart structures[J]. Front Mech Eng Chin, 2009, 4(3): 242-251.

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