Experimental Setup for Testing Rotary MR Dampers With Energy Harvesting Capability

Sapiński, Bogdan; Węgrzynowski, Marcin

doi:10.2478/ama-2013-0041

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…The dependence of F 1 on r and ω is a result of the influence of radius r and angular velocity ω on O/M and T z . As can be deduced from the formulas in table 4 and formula (7), the temperature's influence on the F 1 is greater than the influence of the radius r. Due to that, during the calculations, the temperature increases and the radius decreases with the increase of angular velocity. The optimization research of the clutch model with eight decision values shows that the minimalization of the objective function F 1 leads to minimization of the clutch width as well as to maximization of the outer radius of the clutch.…”

Section: Explanation Of Dependency Processesmentioning

confidence: 87%

“…Currently, ER and MR fluids are used as working fluids in numerous prototype devices and machine components, e.g. : energy recovery systems [6,7], industrial robots [8,9], viscous clutches and brakes [10][11][12], hydrodynamic clutches and brakes [13,14], combined clutches [15], energy absorbers [16][17][18], shock absorbers [19][20][21][22][23][24][25], valves [26][27][28], beams and plates [29,30], seals [31] and engine suspensions [32]. So far, the works on the development of viscous brakes and clutches with ER and MR fluids have been concentrated mainly on explaining the mechanics of the fluids' behaviour and on a functionality assessment of the brakes and clutches [33,34].…”

Section: Introductionmentioning

confidence: 99%

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Design optimization of a viscous clutch with an electrorheological fluid

Żurowski¹,

Osowski²,

Mędrek³

et al. 2022

Smart Mater. Struct.

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The article describes design optimization of a viscous disc clutch with an electrorheological (ER) fluid. The design optimization is conducted based on mathematical models of ER fluid and clutch geometry. As important issues for the optimal design, the assumed values are: the torque transferred by the clutch, the dimensions of the clutch and the steady-state operating temperature of the clutch. The assumed design variables are: the angular velocity of the input shaft, the number of working gaps of the clutch and the selected dimensions of the clutch. The aim of the design optimization is to search for design variables such as the angular velocity of the input shaft, the number of working gaps of the clutch and the selected dimensions of the clutch, for which the clutch transfers the highest possible torque, while the dimensions of the clutch are small and the steady-state operating temperature is low. The design optimization is conducted searching at least two different objective functions created taking into account the volume, the transferred torque and the steady-state operating temperature of the clutch. Two numerical methods are used: the Monte Carlo method and the Genetic Algorithm method. The optimization calculations are performed for two sets of design variables, consisting of 3 and 8 elements, and a final prototype designed via the optimization is depicted with the pricipal design parameters.

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Section: Explanation Of Dependency Processesmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Design optimization of a viscous clutch with an electrorheological fluid

Żurowski¹,

Osowski²,

Mędrek³

et al. 2022

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Viscous clutches and brakes are powertrain units of machines for which ER fluids (Choi et al, 1999; Kęsy et al, 2008; Papadopoulos, 1998) and MR fluids (Becnel et al, 2014; Li and Du, 2003; Nguyen and Choi, 2010; Smith et al, 2007) can be used. These fluids can be also successfully employed in dampers (Gołdasz and Sapiński, 2015; Hong et al, 2007), energy absorbers (Wereley et al, 2004; Zhang et al, 2010) as well as in energy harvesting devices (Sapiński and Węgrzynowski, 2013).…”

Section: Introductionmentioning

confidence: 99%

Modelling and testing of a hydrodynamic clutch filled with electrorheological fluid in varying degree

Olszak

Osowski

Kęsy

et al. 2019

Journal of Intelligent Material Systems and Structures

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The article concerns steady-state characteristics of a hydrodynamic clutch with electrorheological working fluid controlled by changes in strength of electric field and changes in the filling degree. The characteristics were obtained by experimenting, as well as calculations based on one-dimensional mathematical models. While creating the mathematical models, factors taken into consideration included differences between methods controlling the clutch, as well as various ways the working fluid flows in the clutch’s working space, depending on the relation of angular speed of rotors. The resultant mathematical models were verified with experimental research.

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“…Choi and Wereley [22] studied the feasibility and effectiveness of a self-powered MR damper using a springmass EMI device. Sapiński established a permanent magnet power generator for MR damper, the designed vibration generator consisted of a special arrangement and a foil wound coil, and the numerical analysis and experiment were carried out to investigate the magnetic field distribution and efficiency of the generator [23,24]. Then, Sapiński proposed a multipole magnetic generator, the design of permanent magnets array was optimized, and both numerical method and finite element simulation were carried out to investigate the performance of the whole energy harvesting MR damper [25].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Magnetorheological Damper with Energy Harvesting Ability

Sun

et al. 2016

Shock and Vibration

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A magnetorheological (MR) damper with energy harvesting ability was proposed based on electromagnetic induction (EMI) principle. The energy harvesting part was composed of a permanent magnet array and inducing coils which move vertically. This device could act as a linear power generator when the external excitation was applied, and the kinetic energy could be converted into electrical energy due to the relative linear motion between the magnets array and the inducing coils. Finite element models of both the MR damper part and the linear power generator part were built up separately to address the magnetic flux distributions, the magnetic flux densities, and the power generating efficiency using ANSYS software. The experimental tests were carried out to evaluate the damping performance and power generating efficiency. The results show that the proposed MR damper can produce approximately 750 N damping forces at the current of 0.6 A, and the energy harvesting device can generate about 1.0 V DC voltage at 0.06 m·s−1excitation.

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Experimental Setup for Testing Rotary MR Dampers With Energy Harvesting Capability

Cited by 3 publications

References 8 publications

Design optimization of a viscous clutch with an electrorheological fluid

Design optimization of a viscous clutch with an electrorheological fluid

Modelling and testing of a hydrodynamic clutch filled with electrorheological fluid in varying degree

Performance Analysis of a Magnetorheological Damper with Energy Harvesting Ability

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