A new magnetorheological elastomer isolator in shear–compression mixed mode

A new magnetorheological elastomer isolator in shear–compression mixed mode is designed in this article. Two pieces of magnetorheological elastomer fabricated with different dimensions are utilized in the isolator. One magnetorheological elastomer operates on shear mode, and the other operates on compression mode. Next, a finite element method magnetic package is used to analyze the designed magnetic circuit system, and a test system is established to obtain the frequency response of magnetorheological elastomer isolator with mixed mode. It is found that the natural frequency of magnetorheological elastomer isolator changes greatly with variable current applied, and the amplitude of vibration is attenuated widely. Compared with the natural frequency of 0 A, the increment of natural frequency is up to 103% with applied current reaches to 1.5 A. Finally, the dynamic model of isolator system is established, and the stiffness and damping coefficients of magnetorheological elastomer isolator are identified by the experimental method. Meanwhile, the variable range for stiffness and damping of magnetorheological elastomer isolator with mixed mode is greater than that of single mode, which has been proved in theory and experiments.

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

[2]  Wei Zhang,et al.  Temperature-Dependent Mechanical Properties and Model of Magnetorheological Elastomers , 2011 .

[3]  Shouhu Xuan,et al.  The design of an active–adaptive tuned vibration absorber based on magnetorheological elastomer and its vibration attenuation performance , 2011 .

[4]  Jeong-Hoi Koo,et al.  Dynamic characterization and modeling of magneto-rheological elastomers under compressive loadings , 2009 .

[5]  Nicolas Triantafyllidis,et al.  Experiments and modeling of iron-particle-filled magnetorheological elastomers , 2012 .

[6]  Zhenbang Xu,et al.  An Active-damping-compensated Magnetorheological Elastomer Adaptive Tuned Vibration Absorber , 2010 .

[7]  Jie Fu,et al.  A novel porous magnetorheological elastomer: preparation and evaluation , 2012 .

[8]  More Avraam,et al.  On Magnetorheologic Elastomers for Vibration Isolation, Damping, and Stress Reduction in Mass-varying Structures , 2010 .

[9]  Xinglong Gong,et al.  Influence of particle coating on dynamic mechanical behaviors of magnetorheological elastomers , 2009 .

[10]  Faramarz Gordaninejad,et al.  A new isolator for vibration control , 2011, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[11]  Zhang Pei-qiang,et al.  Simulation on physical parameters of magneto-rheological elastomers , 2007 .

[12]  I. Dick,et al.  Design and Test , 1991 .

[13]  Analysis of Vibration Characteristics of Magnetorheological Elastomer Sandwich Beam under Non-Homogeneous Magnetic Field , 2011 .

[14]  Sinopec Luoyang,et al.  Materials and structures of coke drum , 2011 .

[15]  Huaxia Deng,et al.  Investigation on the mechanism of damping behavior of magnetorheological elastomers , 2012 .

[16]  Haiping Du,et al.  Microstructure and magnetorheology of graphite-based MR elastomers , 2011 .

[17]  Miao Yu,et al.  Magnetorheological elastomer and its application on impact buffer , 2013 .

[18]  O. Dickman,et al.  Intelligent material systems and structures: The interface , 1993 .

[19]  Huaxia Deng,et al.  Development of an adaptive tuned vibration absorber with magnetorheological elastomer , 2006 .

[20]  S. Opie,et al.  Design and control of a real-time variable stiffness vibration isolator , 2009, 2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics.

[21]  Barkan M. Kavlicoglu,et al.  Magnetorheological elastomer mount for shock and vibration isolation , 2011, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

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

[23]  Larry Dean Elie,et al.  Controllable-stiffness components based on magnetorheological elastomers , 2000, Smart Structures.

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

[25]  Weihua Li,et al.  A study of the magnetorheological effect of bimodal particle based magnetorheological elastomers , 2010 .

[26]  Nong Zhang,et al.  Semi-active variable stiffness vibration control of vehicle seat suspension using an MR elastomer isolator , 2011 .

[27]  Jeong-Hoi Koo,et al.  Design and test of an adaptive vibration absorber based on magnetorheological elastomers and a hybrid electromagnet , 2013 .

[28]  Muhammad Usman,et al.  Numerical investigation of smart base isolation system employing MR elastomer , 2009 .

[29]  Mark R. Jolly,et al.  The Magnetoviscoelastic Response of Elastomer Composites Consisting of Ferrous Particles Embedded in a Polymer Matrix , 1996 .

[30]  Jeong-Hoi Koo,et al.  Characterization of actuation properties of magnetorheological elastomers with embedded hard magnetic particles , 2012 .