Study on a Dynamic Stiffness-tuning Absorber with Squeeze-strain Enhanced Magnetorheological Elastomer

This article presents the design and analysis of a novel dynamic stiffness tuning vibration absorber working with Magnetorheological elastomers (MRE). In this design, the MRE worked in a shear mode, but its MR effect was significantly enhanced by dynamically squeezing the sample thickness with an embedded piezoelectric (PZT) actuator. With this design, both the quasi-static magnetic field and the PZT driven dynamic squeeze strain in the direction of particles chain were properly adjusted to control the vibration of the primary system. The vibration suppression capabilities were theoretically analyzed by the harmonic analysis. A combined control strategy (the tuning strategy and the ON—OFF strategy) and the control system were developed to suppress the vibration of the primary system. The simulation results indicate that the proposed MRE-PZT-based dynamic stiffness-tuning dynamic vibration absorber (DSTDVA) exhibits more effective suppression capabilities than those conventional MRE-based quasi-static tuned vibration absorbers; the stronger the enhanced effect of squeeze strain on MRE's shear storage modulus is, the more effective vibration suppression capabilities the proposed MRE-PZT-based DSTDVA has.

[1]  John Matthew Ginder,et al.  Magnetorheological elastomers: properties and applications , 1999, Smart Structures.

[2]  Ningqun Guo,et al.  Dynamic behavior of MR suspensions at moderate flux densities , 2004 .

[3]  Behrooz Fallahi,et al.  DESIGN AND DYNAMIC ANALYSIS OF AN ADJUSTABLE INERTIA ABSORBER FOR SEMIACTIVE STRUCTURAL VIBRATION ATTENUATION , 2002 .

[4]  Kenneth A. Cunefare,et al.  Performance of MRE-based Vibration Absorbers , 2008 .

[5]  Alison B. Flatau,et al.  High Bandwidth Tunability in a Smart Vibration Absorber , 1998, Smart Structures.

[6]  Huaxia Deng,et al.  Adaptive Tuned Vibration Absorber based on Magnetorheological Elastomer , 2007 .

[7]  X. Z. Zhang,et al.  The effect of friction on magnetorheological fluids , 2008 .

[8]  George A. Lesieutre,et al.  AN ACTIVELY TUNED SOLID-STATE VIBRATION ABSORBER USING CAPACITIVE SHUNTING OF PIEZOELECTRIC STIFFNESS , 2000 .

[9]  Robert J. Bernhard,et al.  ADAPTIVE PASSIVE VIBRATION CONTROL , 1996 .

[10]  Scott D. Snyder,et al.  Design of an Adaptive Vibration Absorber to Reduce Electrical Transformer Structural Vibration , 2002 .

[11]  Robert J. Bernhard,et al.  NON-COLLOCATED ADAPTIVE–PASSIVE VIBRATION CONTROL , 1997 .

[12]  Emiliano Rustighi,et al.  Real-time control of a shape memory alloy adaptive tuned vibration absorber , 2005 .

[13]  Michael J. Brennan,et al.  IMPROVING THE PERFORMANCE OF A VIBRATION NEUTRALISER BY ACTIVELY REMOVING DAMPING , 1999 .

[14]  Georges Bossis,et al.  FIELD DEPENDENCE OF VISCOELASTIC PROPERTIES OF MR ELASTOMERS , 2002 .

[15]  Michael J. Brennan,et al.  Real-time control of both stiffness and damping in an active vibration neutralizer , 2001 .

[16]  John Matthew Ginder,et al.  Magnetorheological elastomers in tunable vibration absorbers , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[17]  Robert J. Bernhard,et al.  Passive-adaptive vibration absorbers using shape memory alloys , 1999, Smart Structures.

[18]  J. Carlson,et al.  MR fluid, foam and elastomer devices , 2000 .

[19]  A. R. Beard,et al.  Adaptive tuned vibration absorbers: Tuning laws, tracking agility, sizing, and physical implementations , 1994 .

[20]  Toshio Kurauchi,et al.  Magnetroviscoelastic behavior of composite gels , 1995 .

[21]  Frederick T. Calkins,et al.  High bandwidth tunability in a smart vibration absorber , 1998, Smart Structures.

[22]  P. Q. Zhang,et al.  A novel kind of active resonator absorber and the simulation on its control effort , 2007 .

[23]  M. J. Brennan.  Actuators for active vibration control - tunable resonant devices , 2000 .

[24]  P. Walsh,et al.  A variable stiffness vibration absorber for minimization of transient vibrations , 1992 .

[25]  Shang-Teh Wu,et al.  Adaptive vibration control using a virtual-vibration-absorber controller , 2007 .

[26]  X. Tang,et al.  Structure-enhanced yield stress of magnetorheological fluids , 2000 .