Principles, Characteristics and Applications of Magneto Rheological Fluid Damper in Flow and Shear Mode

Khan, Sadak Ali; Suresh, A.; Seetharamaiah, N.

doi:10.1016/j.mspro.2014.07.136

Cited by 38 publications

(13 citation statements)

References 6 publications

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“…One of the most convenient rheological models for ERF and MRF is Bingham plastic model (Kamath et al, 1996;Yoo and Wereley, 2005), which is used in present new unsteady analytical model. The quasi-static analysis for the MRF flow in the annular duct was evaluated by Khan et al (2014). They mathematically modeled the MR damper based on Bingham plastic model and Herschel-Bulkley model.…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation of twin tube magnetorheological dampers using a new unsteady theoretical analysis

Zolfagharian

Kayhani

Norouzi

et al. 2019

Journal of Intelligent Material Systems and Structures

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In the present work, a new unsteady analytical model is developed for magnetorheological fluid flow through the annular gap which is opened on the piston head of twin tube magnetorheological damper, considering fluid inertia term into the momentum equation. This new unsteady model is based on Stokes’ second problem that is extended for magnetorheological fluid flow between finite oscillating parallel plates under the pressure gradient. A quasi-static analysis is also developed for magnetorheological fluid flow in twin tube damper, to compare its results with present unsteady solution and to show the effect of magnetorheological fluid inertia. The obtained results are validated experimentally and then, a parametric study is presented using both unsteady and quasi-static analysis. The effect of fluid inertia term is investigated on force–displacement and force–velocity loops, magnetorheological fluid velocity profile, pressure drop, phase difference between pressure drop and flow rate and change of plug thickness with time duration. According to the obtained results, quasi-static analysis included considerable error respect to new unsteady analysis as the gap height, magnetorheological fluid density, excitation frequencies and amplitudes are increased and yield stress is decreased. It is found that the plug thickness is considerably affected by inertia term of magnetorheological fluid.

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Section: Introductionmentioning

confidence: 99%

Parametric investigation of twin tube magnetorheological dampers using a new unsteady theoretical analysis

Zolfagharian

Kayhani

Norouzi

et al. 2019

Journal of Intelligent Material Systems and Structures

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show abstract

“…The essential feature of MR fluids is their ability to change their behavior from a Newtonian fluid, with linear viscosity, to a semi-solid having a controllable yield strength in milliseconds when exposed to a magnetic field. MR devices are utilized in valve mode, shear mode and squeeze mode [5] and are applied in many areas, such as civil engineering, safety engineering, transportation, life science and more [6]. However, MR fluid-based systems are also utilized in manufacturing engineering.…”

Section: Intr Introduction Oductionmentioning

confidence: 99%

Numerical design of load response in magneto-rheological actuators for sheet metal stamping

Brun¹,

Ghiotti²,

Simonetto³

et al. 2021

Esaform 2021

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Auxiliary systems for sheet forming processes are widely used to improve products accuracy and increase tools life. As example, in blanking hydraulic dampers are widely used to reduce shocks and vibrations; nitrogen springs are often integrated in deep drawing tools to correct the ram tilt or to locally increase the blank-holder force, obtaining geometrical features on the stamped blank with one press pass. In this paper, a Magneto-Rheological (MR) semi-active actuator is developed for sheet forming operations and the interaction between MR fluid and electromagnetic field is investigated by Finite Element (FE) analysis. To overcome the limitations of gas springs and hydraulic actuator, the static electromagnetic circuits is reconfigured with respect of conventional MR actuators known in the state-of-the-art. The novel MR actuator has an inner bore where the electric windings are placed, while the narrow gap, in which the active MR fluid flows, is obtained between the inner bore and the cylinder internal surface. The resulting magnetic fields H and induction fields B, as well as the selection of components materials, are studied through the magneto-static FE model. The results from FE simulations show a longer activation length along the gap resulting in higher controllable forces values, without increasing the overall dimensions of the proposed prototype.

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“…Linear MR dampers also involve flow in shear mode due to the piston motion. However, the main flow is categorised under the flow mode (Khan et al, 2014). Examples of devices that employ shear mode are rotary dampers (brakes), clutches and parallel-plate rheometers (Chan et al, 2011; Du et al, 2014; Ellam et al, 2006; Gurubasavaraju et al, 2018a; Jang et al, 2011; Khan et al, 2014; Liu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A review on multi-physics numerical modelling in different applications of magnetorheological fluids

Elsaady

Oyadiji

Nasser

2020

Journal of Intelligent Material Systems and Structures

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Magnetorheological fluids involve multi-physics phenomena which are manifested by interactions between structural mechanics, electromagnetism and rheological fluid flow. In comparison with analytical models, numerical models employed for magnetorheological fluid applications are thought to be more advantageous, as they can predict more phenomena, more parameters of design, and involve fewer model assumptions. On that basis, the state-of-the-art numerical methods that investigate the multi-physics behaviour of magnetorheological fluids in different applications are reviewed in this article. Theories, characteristics, limitations and considerations employed in numerical models are discussed. Modelling of magnetic field has been found to be rather an uncomplicated affair in comparison to modelling of fluid flow field which is rather complicated. This is because, the former involves essentially one phenomenon/mechanism, whereas the latter involves a plethora of phenomena/mechanisms such as laminar versus turbulent rheological flow, incompressible versus compressible flow, and single- versus two-phase flow. Moreover, some models are shown to be still incapable of predicting the rheological nonlinear behaviour of magnetorheological fluids although they can predict the dynamic characteristics of the system.

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Principles, Characteristics and Applications of Magneto Rheological Fluid Damper in Flow and Shear Mode

Cited by 38 publications

References 6 publications

Parametric investigation of twin tube magnetorheological dampers using a new unsteady theoretical analysis

Parametric investigation of twin tube magnetorheological dampers using a new unsteady theoretical analysis

Numerical design of load response in magneto-rheological actuators for sheet metal stamping

A review on multi-physics numerical modelling in different applications of magnetorheological fluids

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