Variable stiffness and damping magnetorheological isolator

Abstract

This paper presents the development and characterization of a magnetorheological (MR) fluid-based variable stiffness and damping isolator. The prototype of the MR fluid isolator is fabricated, and its dynamic behavior is measured under various applied magnetic fields. The parameters of the model under various magnetic fields are identified, and the dynamic performance of the isolator is evaluated in simulation. Experimental results indicate that both the stiffness and damping capability of the developed MR isolator can be controlled by an external magnetic field.

Keywords

magnetorheological (MR) fluid / stiffness / damping / mathematical model / dynamic performance / parameter identification

References

[1] Sun L, Cai X M, Yang J. Genetic algorithm-based optimum vehicle suspension design using minimum dynamic pavement load as a design criterion. Journal of Sound and Vibration, 2007, 301: 18-27

[2] Daley S, Hatonen J, Owens D H. Active vibration isolation in a “smart spring” mount1 using a repetitive control approach. Control Engineering Practice, 2006, 14: 991-997

[3] Cronje J M, Heyns P S, Theron N J, Loveday P W. Development of a variable stiffness and damping tunable vibration isolator. Journal of Vibration and Control, 2005, 11: 381-396

[4] Zhu W H, Tryggvason B, Piedboeuf J C. On active acceleration control of vibration isolation systems. Control Engineering Practice, 2006, 14: 863-873

[5] Anakwa W K N, . Development and control of a prototype pneumatic active suspension system. IEEE Transactions on Education, 1998, 45: 43-49

[6] Spencer B F, Sain M K, Carlson J D. An experimental study of MR dampers for seismic protection. Smart Materials & Structures, 1998, 7: 693-703

[7] Yoshioka H, Ramallo J C, Spencer B F. “Smart” base isolation strategies employing magnetorheological dampers. Journal of Engineering Mechanics, 2002, 128: 5, 540

[8] Wang X. Nonlinear behavior of magnetorheological (MR) fluids and MR dampers for vibration control of structural systems. PhD thesis, University of Nevada, 2002

[9] Choi S B, . Vibration control of a passenger vehicle featuring magnetorheological engine mounts. International Journal of Vehicle Design, 2003, 33: 2-16

[10] Yao G Z, . MR damper and its application for semi-active control of vehicle suspension system. Mechatronics, 2002, 12: 963-973

[11] Choi Y T, Wereley N M, Jeon Y S. Semi-Active vibration isolation using Magnetorheological isolators. Journal of Aircraft, 2005, 42: 1244-1251

[12] Duan Y F, Ni Y Q, Ko J M. Cable vibration control using magnetorheological dampers. J Intell Mater Syst & Struct, 2006, 17: 321-325

[13] Kobori T, Takahashi M, Nasu T, Niwa N, Ogasawara K. Seismic response controlled structure with active variable stiffness system. Earthquake Engineering and Structural Dynamics, 1993, 22: 11, 925-941

[14] Youn I, Hac A. Semi-active suspension with adaptive capability. Journal of Sound and Vibration, 1995, 180: 3, 475-492

[15] Liu Y, Matsuhisa H, Utsuno H, Park J G. Vibration control by a variable damping and stiffness system with magnetorheological damper. JSME International Journal, Series C, 2005, 48: 2, 305-310

[16] Li W H, Yao G Z, Chen G, Yeo S H, Yap F F. Testing and steady state modeling of a linear MR damper under sinusoidal loading, Smart Mater Struct, 2000, 9: 1, 95-102

RIGHTS & PERMISSIONS

Higher Education Press and Springer-Verlag Berlin Heidelberg