A novel self-powered MR damper: theoretical and experimental analysis

Guan, Xinchun; Huang, Yonghu; Ru, Yi; Li, Hui; Ou, Jinping

doi:10.1088/0964-1726/24/10/105033

Cited by 35 publications

(13 citation statements)

References 19 publications

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“…AGNETORHEOLOGICAL (MR) fluids are smart materials, which are used in applications such as car shock absorbers [1][2][3], hydraulic valves [4], and journal bearings [5]. The massive increase of the viscosity of MR fluids in response to magnetic fields is the key factor of fluid smartness.…”

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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“…There are lots of researches in the literature on the modeling and testing various types of MR dampers. Normally a commercial MR damper or a prototype MR damper is tested and then employing a hysteresis model, the dynamic behavior of MR damper had been described [24,[32][33][34]. Chooi et al [35] using analytical techniques proposed a general expression on the annular flow of fluids and comparing the results with those of experiments, they validated their formulation.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and experimental evaluation of a prototype double-tube Magnetorheological damper

et al. 2019

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The performance of Magnetorheological dampers should be analyzed to study the stability of Magnetorheological fluid and its configuration. To this end, in this study a prototype Magnetorheological fluid is presented. The fluid consists of stabilized Silicone dioxide (SiO 2) nanoparticles, Stearic acid, Phosphoric acid and micron-sized soft ferromagnetic carbonyl iron particles. To assure the authentic performance, sedimentation and magneto-rheometry tests are conducted. Also, a prototype of double-tube Magnetorheological damper with double magnetic components is fabricated by using the mentioned magnetorheological fluid characteristics. Damping force measurement test is carried out to measure the damping force in various electrical currents. The Kwok model is employed to examine the analytical model predictions against the experiments. Furthermore, a general evolution is presented using the neural network algorithm. It is demonstrated that the damping force in saturated current is almost five times higher than in the zero current. In addition, the derived evolution for the damping force has a high performance to predict the response of the Magnetorheological damper in other electrical currents.

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“…He also developed a semi-active suspension with non-piston MR damper to reduce the vibration of a washing machine, which is a typical variable mass system [25]. Wang The power generation part employed ball-screw mechanism and a rotary DC generator to convert mechanical vibration into electrical power [28]. However, most of the current self-powered MR dampers can only control their damping force.…”

Section: Introductionmentioning

confidence: 99%

Development of a variable stiffness magnetorheological damper with self-powered generation capability

Zhu

Deng

Sun

et al. 2019

Journal of Intelligent Material Systems and Structures

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This article reports a compact stiffness controllable magnetorheological damper with a self-powered capacity. First, the structure, working mechanism, and analysis of the damper are presented. After the prototype of the magnetorheological damper, experimental tests were conducted to evaluate its variable stiffness feature and self-powered generation capability using a hydraulic Instron test system. The testing results demonstrate that its stiffness variation range can reach 70.4% when the applied current increases from 0 to 2 A. The energy generating capability of the magnetorheological damper was also evaluated using the Instron testing system under a harmonic excitation with 0.15 Hz frequency and 30 mm displacement. The testing results illustrate that the self-powered generation component can generate 2.595 W effective power, which is enough to control the magnetorheological component of the damper. The successful development, theoretical analysis, and experimental testing of this new variable stiffness self-powered magnetorheological damper make the concept of energy-free variable stiffness magnetorheological damper feasible. AbstractThis paper reports a compact stiffness controllable magnetorheological (MR) damper with a self-powering capacity. Firstly, the structure, working mechanism and analysis of the damper are presented. After the prototype of the MR damper, experimental tests were conducted to evaluate its stiffness variable feature and self-powered generation capability using a hydraulic Instron test system.The testing results demonstrate that its stiffness variation range can reach 70.4% when the applied current increases from 0A to 2A.The energy generating capability of the MR damper was also evaluated using the Instron testing system under a harmonic excitation with 0.15Hz frequency and 30mm displacement. The testing results illustrate that the self-powered generation component can generate 2.595 W effective power, which is enough to control the MR component of the damper. The successful development, theoretical analysis and experimental testing of this new variable stiffness self-powered MR damper make the concept of energy free stiffness variable MR damper feasible.

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A novel self-powered MR damper: theoretical and experimental analysis

Cited by 35 publications

References 19 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

Mathematical modeling and experimental evaluation of a prototype double-tube Magnetorheological damper

Development of a variable stiffness magnetorheological damper with self-powered generation capability

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