Numerical Simulation and Experimental Study on Magnetorheological Fluid Seals With Flexible Pole Pieces

Li, Zixian; Li, Shuangxi; Wang, Xin; Li, Decai

doi:10.1109/tmag.2021.3094868

Cited by 8 publications

(1 citation statement)

References 25 publications

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“…Magnetic fluid seal is a new type of sealing method, which has the advantages of zero leakage, long life and high reliability (Chi et al, 1993;Chen et al, 2018;Yu et al, 2021). In the practical application of the magnetic fluid sealing device, the magnetic fluid exists in the gap between the pole teeth and the rotating shaft, forming several "O"-shaped sealing rings, which achieves the sealing effect (Chi, 2011;Li et al, 2021;Niu, 2021).…”

Section: Introductionmentioning

confidence: 99%

Influence of magnetic fluid evaporation on pressure resistance of magnetic fluid seal

Zang

et al. 2022

Front. Mater.

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Magnetic fluid seals have the advantages of zero leakage, long life, simple structure and high reliability, and have become one of the most widely used applications of magnetic fluids. In this paper, the effect of magnetic fluid evaporation on the pressure resistance of magnetic fluid seals is studied. In terms of theory, through theoretical calculation and simulation analysis, a calculation method for the pressure resistance of magnetic fluid seals is established. In terms of experiments, firstly, five groups of control groups were set up to conduct evaporation experiments under the same conditions, and magnetic fluids with different evaporation rates were obtained; Secondly, the performance of magnetic fluids with different evaporation rates was tested, and the flow curves, viscosity-temperature curves, and magnetic-viscosity curves of magnetic fluids were obtained respectively, and the effect of evaporation on the performance of magnetic fluids was analyzed; Finally, magnetic fluid sealing experiments with different evaporation rates were carried out. It is found that evaporation increases the pressure resistance of static seal to a certain extent, which is of great significance.

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Section: Introductionmentioning

confidence: 99%

Influence of magnetic fluid evaporation on pressure resistance of magnetic fluid seal

Zang

et al. 2022

Front. Mater.

Self Cite

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An optimal design method for magnetorheological fluid sealing structure for beam director using multi-objective optimizer

Shen,

Li,

Liu

et al. 2024

Arch. Civ. Mech. Eng.

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For beam directors, tight optical path sealing and low rotational friction torque are critical aspects for the tracking and positioning performance. To maximize sealing pressure and minimize rotational friction torque, a magnetorheological fluid sealing (MRFS) structure design method based on multi-objective COOT (MOCOOT) algorithm optimizer was proposed in this work. The MOCOOT integrates archive, grid strategy, chaotic mapping strategy and COOT optimization algorithm. Firstly, the magnetic field strength of the sealing clearance was derived based on the equivalent magnetic circuit model, the sealing pressure formula of MRFS with pole teeth structures was established, and the friction torque model of MRFS based on Bingham equation was also developed. Then, according to the actual requirements of optical path sealing of beam directors, the constraint conditions of structure parameters were determined, and the optimization target model of sealing pressure and friction torque was constructed. As follows, a multi-objective version of COOT optimization algorithm, named MOCOOT, was proposed to optimize the structural parameters of MRFS structure. Finally, the effectiveness of the proposed method was verified via pressure and rotating friction torque tests implemented on an established experimental platform.

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Advances in magnetic fluid seal and structures

Zeng,

Deng,

et al. 2024

Journal of Magnetism and Magnetic Materials

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Numerical Simulation and Experimental Study on Magnetorheological Fluid Seals With Flexible Pole Pieces

Cited by 8 publications

References 25 publications

Influence of magnetic fluid evaporation on pressure resistance of magnetic fluid seal

Influence of magnetic fluid evaporation on pressure resistance of magnetic fluid seal

An optimal design method for magnetorheological fluid sealing structure for beam director using multi-objective optimizer

Advances in magnetic fluid seal and structures

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