Development of models of the magnetorheological fluid damper

Kazakov, Yu. B.; Morozov, N.; Nesterov, S.A.

doi:10.1016/j.jmmm.2016.10.006

Cited by 25 publications

(11 citation statements)

References 5 publications

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“…Under the effect of a magnetic field, the ferromagnetic particles queue in a network of rigid chains [8]. The network gives the MR fluid a considerable yield stress, , which causes the fluid to exhibit viscous and plastic characteristics during flow [9]. Therefore, the flow behaviour of MR fluids is mainly a non-Newtonian magnetic-field-dependent flow behaviour.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Circuit Analysis and Fluid Flow Modeling of an MR Damper With Enhanced Magnetic Characteristics

2020

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A novel design of a magnetorheological (MR) damper is developed, fabricated, modelled and tested. The design includes some features that enhance the magnetic characteristics of the damper. The iron-cobalt-vanadium "Vacoflux-50" alloy and the "AMT-Smartec + " MR fluid, whose magnetic characteristics have been predicted to enhance the performance of the damper, are employed in the new design. Moreover, the location of the MR fluid region in the piston construction has been chosen so that the magnetic field maximises. To evaluate the impact of the proposed design improvements, an approach to modelling the performance of a previously-tested MR damper of a different design, different magnetic material, and different MR fluid has been developed. The approach combines a Finite Element Analysis (FEA) of the magnetic circuit, and a nonlinear analytical model of fluid flow. The results of the FE/analytical approach have been validated using the available published results of the same damper. Hence, the approach has been used to predict the performance of the same damper due to the employment of the proposed design improvements. The FE/analytical approach accounts for the nonlinear characteristics caused by the magnetic saturation of materials and the effects of fluid compressibility and aeration in the damper. It has been found that the implementation of the proposed design features leads to a remarkable increase in the magnetic field and the fluid yield stress. Also, the inclusion of the nonlinear magnetic and fluid flow characteristics have been found to affect the magnetic field distribution and the fluid yield stress greatly.

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Section: Introductionmentioning

confidence: 99%

Magnetic Circuit Analysis and Fluid Flow Modeling of an MR Damper With Enhanced Magnetic Characteristics

2020

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“…The modified Bouc–Wen MR is composed of two dashpots with low and high velocity and also two springs with low and high stiffness. 30,31…”

Section: Introductionmentioning

confidence: 99%

“…The modified Bouc-Wen MR is composed of two dashpots with low and high velocity and also two springs with low and high stiffness. 30,31 So far, most research on the wing and store flutter has been done assuming a rigid connection between the external store and wing, but in this paper elasticity of the connection is considered in the model. The MR damper is used at the connection point of the store to the wing in order to control their limit cycle oscillations.…”

Section: Introductionmentioning

confidence: 99%

Flutter suppression of an aircraft wing with a flexibly mounted mass using magneto-rheological damper

Ghasemikaram

Mazidi

Fazel

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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Flutter analysis and suppression of an aircraft wing with a flexibly mounted external store using a magneto-rheological damper are investigated. The wing performs as a cantilever beam and the structural model, which incorporates bending-torsion flexibility, is used. A modified Bouc–Wen model is utilized in order to model the elastic connection between the store and the wing. The modified Peter’s finite-state loading is also considered to simulate the aerodynamic force and moment. The governing equations are obtained via Hamilton’s principle and assumed modes method is subsequently applied to transform the resulting partial differential equations into a set of ordinary differential equations. Numerical simulations are validated against several previously published papers by using a clean Goland wing. In order to control the vertical and rotational vibrations of the store and the wing, a state feedback controller and a compensator with full-order observer are designed. The performance of these controllers is compared together in several situations. Eventually, the performances are treated when disturbance is applied to the system. The results show that magneto-rheological damper’s performance is suitable for controlling the limit cycle oscillations of the wing and external store, in flutter condition.

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“…MR fluid is the material that exhibits fast, alterable and tuneable dramatic changes from continuous steady-state to the highly viscous state upon the magnetic field is applied [4]. Over the last decades, there is a large volume of published studies in understanding its phenomena in the broad applications that use these field-controllable materials for commercialization [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation to a Prototype Magnetorheological (MR) Semi-Active Damper for C-Class Vehicle

Unuh

Muhamad

Yakub

et al. 2019

IJAME

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In this study, a semi-active damper with OEM technical standard featuring MR fluid was fabricated to assess its use as potential reinforcement in enhancing c-class vehicle ride comfort. The finite element modelling was employed to investigate the capability of the MR semi-active damper prototype design in altered the damping utilizing unique rheological properties of MR fluid. The quarter car test rig completes with DYTRAN accelerometer and LMS Scadas mobile was operated to measure the RMS sprung mass acceleration of the MR semi-active damper prototype caused by a 5cm sinusoidal bump at speed of 10km/h. The finite element modelling gave the best representation of the ability of the design to manifest the shear stress development of MR fluid used. Indeed, the MR semi-active damper model prototype was able to enhance ride comfort by decreasing the acceleration of sprung mass compare to OEM passive damper. It was found that the applied current had the greatest influence on RMS sprung mass acceleration when measured over a range of frequency.

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Development of models of the magnetorheological fluid damper

Cited by 25 publications

References 5 publications

Magnetic Circuit Analysis and Fluid Flow Modeling of an MR Damper With Enhanced Magnetic Characteristics

Magnetic Circuit Analysis and Fluid Flow Modeling of an MR Damper With Enhanced Magnetic Characteristics

Flutter suppression of an aircraft wing with a flexibly mounted mass using magneto-rheological damper

Experimental Validation to a Prototype Magnetorheological (MR) Semi-Active Damper for C-Class Vehicle

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