Magnetic Circuit Design and Multiphysics Analysis of a Novel MR Damper for Applications under High Velocity

A novel magnetorheological (MR) damper with a multistage piston and independent input currents is designed and analyzed. The equivalent magnetic circuit model is investigated along with the relation between magnetic induction density in the working gap and input currents of the electromagnetic coils. Finite element method (FEM) is used to analyze the distribution of magnetic field through the MR fluid region. Considering the real situation, coupling equations are presented to analyze the electromagnetic-thermal-flow coupling problems. Software COMSOL is used to analyze the multiphysics, that is, electromagnetic, thermal dynamic, and fluid mechanic. A measurement index involving total damping force, dynamic range, and induction time needed for magnetic coil is put forward to evaluate the performance of the novel multistage MR damper. The simulation results show that it is promising for applications under high velocity and works better when more electromagnetic coils are applied with input currents separately. Besides, in order to reduce energy consumption, it is recommended to apply more electromagnetic coils with relative low currents based on the analysis of pressure drop along the annular gap.

[1]  Norman M. Wereley,et al.  A Magnetorheological Damper with Bifold Valves for Shock and Vibration Mitigation , 2007 .

[2]  Behzad Taheri,et al.  Finite Element Modeling and Analysis of Magnetorheological Dampers , 2011 .

[3]  Ian A. Frigaard,et al.  Numerical solution of duct flows of multiple visco-plastic fluids , 2004 .

[4]  Mehdi Ahmadian,et al.  Designing magneto-rheological dampers in a fire out-of-battery recoil system , 2003 .

[5]  Norman M. Wereley,et al.  Design and testing of a magnetorheological damper to control both vibration and shock loads for a vehicle crew seat , 2010, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[6]  Jiong Wang,et al.  Experiment Investigation of Magnetorheological Damper for High Impulsive Load , 2010 .

[7]  Faramarz Gordaninejad,et al.  A New Bypass Magnetorheological Fluid Damper , 2007 .

[8]  Zhaochun Li,et al.  A gun recoil system employing a magnetorheological fluid damper , 2012 .

[9]  Zhen Ning Hou,et al.  Experimental Study on Performance Characteristics of Magnetorheological Damper , 2010 .

[10]  Dimitrios A. Bompos,et al.  CFD simulation of magnetorheological fluid journal bearings , 2011, Simul. Model. Pract. Theory.

[11]  Jiong Wang,et al.  Research on Time Delay of MR Buffer System Under Impact Load , 2013 .

[12]  Wei Hu,et al.  Energy Absorber Using a Magnetorheological Bypass Valve Filled With Ferromagnetic Beads , 2007, IEEE Transactions on Magnetics.

[13]  Wei-Hsin Liao,et al.  Semi-active suspension systems for railway vehicles using magnetorheological dampers. Part II: simulation and analysis , 2009 .

[14]  Faramarz Gordaninejad,et al.  Modular High-Force Seismic Magneto-Rheological Fluid Damper , 2010 .

[15]  Yang Shi.  Fabrication and Rheological Properties on Composite Intelligent Magnetorheological Fluids , 2000 .

[16]  D. Case,et al.  Design and Characterization of a Small-Scale Magnetorheological Damper for Tremor Suppression , 2013, IEEE/ASME Transactions on Mechatronics.

[17]  James A. Norris,et al.  Experimental analysis of magnetorheological dampers when subjected to impact and shock loading , 2008 .

[18]  Dai-Hua Wang,et al.  A bi-annular-gap magnetorheological energy absorber for shock and vibration mitigation , 2012, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[19]  Gangbing Song,et al.  Investigation of Locking Force for Stay Cable Vibration Control Using Magnetorheological Fluid Damper , 2008 .

[20]  Yancheng Li,et al.  Dynamic Simulation and Test Verification of MR Shock Absorber under Impact Load , 2006 .

[21]  Jin-Hyeong Yoo,et al.  Double Adjustable Magnetorheological Dampers for a Gun Recoil System , 2005 .

[22]  Wei-Hsin Liao,et al.  Semi-active suspension systems for railway vehicles using magnetorheological dampers. Part I: system integration and modelling , 2009 .

[23]  Mehdi Ahmadian,et al.  An evaluation of magneto rheological dampers for controlling gun recoil dynamics , 2001 .

[24]  David A. Robb,et al.  MAGNETORHEOLOGICAL FLUID DAMPERS FOR ROTOR VIBRATION CONTROL , 2001 .

[25]  Chen Weimin.  Analysis of dynamic response time of MR damper and its influential factors , 2006 .