Continuum electromechanics of a magnetorheological damper including the friction force effects between the MR fluid and device walls: Analytical modelling and experimental validation

Costa, Eduarda; Branco, P. J. Costa

doi:10.1016/j.sna.2009.08.004

Cited by 23 publications

(11 citation statements)

References 22 publications

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“…There are many papers published which deal with the applications of MR fluids and their using specification in the literature. Applied modes of these fluids and rheological properties were detailed by (Costa and Branco 2009;Gedik et al 2012). Channel and micro-channel flows of MR fluids have been studied by several authors (Bruno et al 2009;Nishiyama et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on Laminar Pipe Flow of Magneto-Rheological Fluids under Applied External Magnetic Field

Gedik

2017

JAFM

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An experimental and numerical study of Magnetorheological (MR) fluids flow in circular pipes under the influence of uniform magnetic field is considered. In the experiments, an electromagnetic device was manufactured to generate the magnetic field. The experiments were performed using magnetic fields B= 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.12 and 0.15 T. Numerical study was performed to show the accuracy of the results obtained from experimental study. In numerical study, Computational Fluid Dynamics (CFD) analysis was used. The ANSYS Fluent 14.0 code based on the finite volume method was used for the CFD analysis. In the experiments, the applied magnetic field decreased the flow rate of the fluids by increasing viscosity. In case of 10 mm pipe diameter, the flow velocity of the A, B and C fluids were obtained as 0.593, 0.749 and 0.938 m/s respectively in situation B=0 T. When magnetic field was applied as B=0.15 T, decreases have occurred in the velocity of A, B and C fluids as 95.27%, 90.24% and 85.6% respectively. Similarly, in case of 15 mm pipe diameter, 96.87%, 95.06% and 90.76% decreases have occurred in the flow velocity of A, B and C fluids having 0.301, 0.363 and 0.445 m/s flow velocity respectively. The results were compared for the magnetic field values B=0, 0.05, 0.10 and 0.15 T. It was found that the differences between experimental and numerical study were found as 6.10% and 1.71% for the B=0 T and B≠0 T situations respectively when the pipe has 10 mm pipe diameter. In case of 15 mm pipe diameter, the differences were found as 2.31% and 0.89%. As a result, it was found that the results obtained from experimental and numerical study were qualitatively and quantitatively in good agreement.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on Laminar Pipe Flow of Magneto-Rheological Fluids under Applied External Magnetic Field

Gedik

2017

JAFM

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“…They also carried out that computational fluid dynamic analysis to validate with the obtained general expression. Costa and Branco [6] conducted experimental and analytical evaluation of MR damper and also studied the friction force effect between MR fluid and the device wall. Avinash et al [7] developed the twin tube MR damper and conducted an experiment to analyze the damping characteristic of MR damper under different conditions such as air damping, viscous damping and MR damping.…”

Section: Introductionmentioning

confidence: 99%

Vertical dynamic analysis of a quarter car suspension system with MR damper

Hemanth

Kumar

Gangadharan

2016

J Braz. Soc. Mech. Sci. Eng.

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the vehicle, which may be due to a variety of sources like road surfaces irregularities, aerodynamic forces, vibrations of the engine and transmission. A strong demand for good suspension system exists to mitigate the vibrations that are being transmitted from road surface to the vehicle body. Vehicle suspension system is responsible for isolating the vibrations of the vehicle body to achieve ride comfort and safety. A good ride comfort requires a soft suspension, whereas a hard suspension is required for carrying heavy loads. A good handling of vehicles requires a suspension system which makes better trade-off between two abovestated criteria [1]. To fulfill these conflicting requirements, a fully active or semi-active suspension system is preferred over a conventional passive suspension system. Active suspension system possesses inherent drawbacks as it necessitates large power requirement to drive external energy source. The cost of suspension system will be high and complex and difficulties arise while implementation of control hardware. Semi-active suspension system combines the advantage of the active suspension in terms of improved vehicle performance and the robustness of the passive suspension, without requiring large power source [2]. In semi-active suspension, the amount of damping can be tuned in real time. The variation of damping may be achieved by varying the viscosity of the fluid under the influence of electric or magnetic field. Electrorheological (ER) and MR dampers are semi-active control devices that use ER and MR fluids to produce controllable damping force. MR fluids are similar to ER fluid, but MR fluids are 20-50 times stronger than ER fluid and it can be activated from low-voltage power supply (less than 10 V and 1-2 A). MR fluids are far less sensitive to contamination and extreme temperature (150 °C and higher). Butz and Von [3] presented an overview on properties of MR and ER fluid. Also, the various Abstract This paper presents ride comfort and road holding analysis of passive and semi-active suspension system using quarter car model. Semi-active suspension system with magnetorheological (MR) damper was modeled as non-parametric model-based magnetic flux density in the fluid flow gap. The skyhook control strategy was used to analyze semi-active control performance. The simulation of passive and semi-active suspension system was carried out under random road profile for different velocities. The result shows that semi-active suspension has significant improvement in terms of ride comfort and road holding of vehicle than passive suspension system. Experimental studies have been conducted to characterize MR damper and a good match is observed between results with simulation results obtained using non-parametric model.

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“…An analytical description of the hysteresis loop was presented by Ikhouane et al (2006) to understand the influence of the model parameters. Recently, a continuum electromechanical model describing the damper behavior was formulated based on modeling the friction force effects between the MR fluid and the device walls (Costa and Branco-Costa, 2009), while Çeşmeci and Engin (2010) proposed an algebraic model.…”

Section: Introductionmentioning

confidence: 99%

Practical hysteresis model for magnetorheological dampers

Domínguez-González

Stiharu

2013

Journal of Intelligent Material Systems and Structures

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The magnetorheological dampers have been extensively studied given their benefits such as fail-safe manner, low power requirements, relative fast response, and large force capacity and robustness. To take advantage of this remarkable device, a good model is required to accurately and effectively predict the real-time damping force in magnetorheological damper in order to apply the appropriate control actions to improve the response of the structural system. In this article, a new practical model is proposed to better characterize the hysteresis phenomenon in magnetorheological dampers. The model considers the displacement, velocity, and acceleration excitations as well as the current excitation as input variables and includes a reduced number of constant parameters to be determined. Since the displacement, velocity, and acceleration variables can be obtained in real time from adequate sensors, it is easy and practical to predict the current excitation required to generate the specific hysteresis force. The hysteresis damping forces predicted by the proposed model are validated with those experimentally obtained for different current, amplitude, and frequency of excitation, and a very good correlation has been observed.

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Continuum electromechanics of a magnetorheological damper including the friction force effects between the MR fluid and device walls: Analytical modelling and experimental validation

Cited by 23 publications

References 22 publications

Experimental and Numerical Investigation on Laminar Pipe Flow of Magneto-Rheological Fluids under Applied External Magnetic Field

Experimental and Numerical Investigation on Laminar Pipe Flow of Magneto-Rheological Fluids under Applied External Magnetic Field

Vertical dynamic analysis of a quarter car suspension system with MR damper

Practical hysteresis model for magnetorheological dampers

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