Modeling and Analyzing of Hysteresis Behavior of Magneto Rheological Dampers

For the single-rod double-cylinder and double-coil magnetorheological (MR) damper studied in this paper, the damping force model of the damper is established by adopting multidisciplinary domain modeling method bond graph theory. Firstly, combined with the structure of the MR damper, the bond graph model of the MR damper was established, the damping force model of the damper was derived through the bond graph theory, and the influence factors, such as the displacement, velocity, and acceleration of the damper were considered in the model. Based on the simulation of force-displacement and force-velocity characteristics of the damping force carried out by the damper theoretical model under different currents and velocities as well as the comparison with the damper bench test results, it was found that the force-displacement and force-velocity characteristic experiment curves of the damper agreed well with the simulation results. Under different working conditions, the maximum error of damping force of the MR damper was 7.2%. e damping force model of the MR damper studied in this paper was compared with that of the damper without considering the inertia force of MR fluid, and the influence of the inertia force of MR fluid on the damping force of the MR damper was analyzed. e results show that when the frequency of the damper is large, the inertial force of MR fluid has an important influence on the damping force; therefore, considering the inertial force of MR fluid in the model can greatly improve the accuracy of the model. e influence degree of key parameters on the damping force of the MR damper was studied through the theoretical model; such key parameters ranging from large to small were the channel clearance, energizing current, piston diameter, motion velocity, channel length, zero-field viscosity of MR fluid, and nitrogen pressure. is provides a basis for the adjustment of the damping force of the MR damper.

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“…In 2011, Guan et al [27] of Harbin Institute of Technology, China, studied the modeling and hysteresis properties of the MR damper.…”

Section: Introductionmentioning

confidence: 99%

Research on Theoretical Modeling and Parameter Sensitivity of a Single-Rod Double-Cylinder and Double-Coil Magnetorheological Damper

Hou

Liu

2020

Mathematical Problems in Engineering

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“…Guan et al [16] predicted the hysteretic behavior of MR damper under sinusoidal excitation by developing a physical model which considers the compressibility of MR damper. A simplified analogy was also presented that neglects the viscous element of the proposed model.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental characterization of a twin-tube MR damper for a passenger van

Desai

Jamadar

Kumar

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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The smart behavior of magneto-rheological (MR) fluid is used in the present work in designing, experimentally characterizing and analyzing a MR damper for automotive application using the twin-tube damper concept. A commercially available passive damper of a passenger van was tested to find the characteristic damping requirement of the vehicle. With this as reference, a twin-tube MR damper working in valve mode was designed and fabricated. The magnetic flux density induced in the fluid flow gap is maximized using Taguchi analysis and finite element method magnetics (FEMM) software. The FEMM results are validated by verifying with results obtained analytically using electromagnetic circuit theory. The MR damper filled with commercially available MR fluid was experimentally tested in damper testing machine. The results demonstrate that the force developed by the MR damper is indeed increasing with the value of the current supplied. At various frequencies of input oscillation, the energy dissipated by the MR damper in a single cycle increases significantly with current supplied. The novelty of this work is that a twin-tube MR damper working in valve mode was designed as a replacement for the passive damper used in a passenger van. The MR damper thus developed is capable of producing practical levels of damping force at actual operating frequencies and amplitudes of the passive damper in the passenger van. For further analysis, the behavior of the MR damper is modeled by using the Bouc-Wen model for hysteretic systems. A proportional-integral-derivative controller is used to track the desired damping force in time domain to demonstrate the application of the MR damper in a semi-active suspension system.

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“…Zhang et al [2] studied the importance of energy dissipated and controllable force in MR damper performance and hence concluded that both are strong functions of magnetic flux density that can be attained in MR fluid gap. Guan et al [3] derived not only ordinary differential equations to represent the physical MR damper using the friction element, viscous element and spring element but also expression to determine the width of the hysteresis. Spencer et al [4] reviewed various models available at that time and proposed a new model that could predict the working of a magnetic field-controllable MR fluid damper in a more effective manner.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a commercial MR damper for application in semi-active suspension

et al. 2019

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As the rheology of a magneto-rheological (MR) fluid can be controlled by an externally applied magnetic field, the damping force generated by a MR damper can be controlled by varying the current supplied to an electromagnet inside the damper. This paper presents the experimental evaluation of such a MR damper RD-8040-1 by Lord Corporation, USA, and its application in a semi-active suspension. The experiments were carried out in damping force testing machine. Sinusoidal displacement input was given to the test damper. The set of experiments were repeated for different levels of current (0-1.5 A in steps of 0.25 A) supplied to the MR damper. Plots of force versus displacement for each frequency of excitation and plots of maximum force versus frequency of excitation show that higher values of current lead to elevated values of MR damper forces. This increase in MR damper load with current supplied is studied and analyzed to develop a mathematical model of the MR damper under investigation. The nonlinear softening hysteretic behavior of the MR damper is simulated by using genetic algorithm provided in the optimization toolbox of MATLAB. Calculations on energy dissipation and equivalent damping coefficient of the MR damper show that the same damper can make the suspension system behave as an underdamped system, critically damped system or overdamped system depending on the value of current supplied to it. The application of this MR damper for heavy vehicle driver's seat suspension is explored with the help of MATLAB simulations.

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Modeling and Analyzing of Hysteresis Behavior of Magneto Rheological Dampers

Cited by 21 publications

References 19 publications

Research on Theoretical Modeling and Parameter Sensitivity of a Single-Rod Double-Cylinder and Double-Coil Magnetorheological Damper

Research on Theoretical Modeling and Parameter Sensitivity of a Single-Rod Double-Cylinder and Double-Coil Magnetorheological Damper

Design and experimental characterization of a twin-tube MR damper for a passenger van

Evaluation of a commercial MR damper for application in semi-active suspension

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