Effects of micron–nano composite iron particle powders on the tribological properties of magnetic fluids used for a nonlinear energy sink vibration absorber

Low-frequency vibration control is a crucial challenge within the realm of fluid physics, and in this paper, a novel magnetic compound fluid (MCF) has been developed to produce a magnetic fluid nonlinear energy sink (MF-NES) with optimum energy consumption efficiency. The mixed doping of bi-disperse...

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Veröffentlicht in:Physics of fluids (1994) 2023-09, Vol.35 (9)
Hauptverfasser: Nie, Songlin, Gong, Fei, Ji, Hui, Zhang, Le, Ma, Zhonghai, Yin, Fanglong
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container_issue 9
container_start_page
container_title Physics of fluids (1994)
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creator Nie, Songlin
Gong, Fei
Ji, Hui
Zhang, Le
Ma, Zhonghai
Yin, Fanglong
description Low-frequency vibration control is a crucial challenge within the realm of fluid physics, and in this paper, a novel magnetic compound fluid (MCF) has been developed to produce a magnetic fluid nonlinear energy sink (MF-NES) with optimum energy consumption efficiency. The mixed doping of bi-dispersed nano-sized iron particles (NIPs) and micrometer-sized carbonyl iron particles (CIPs) can generate a load-bearing structure between the inertial mass and the MF-NES shell with a reduced friction coefficient. The effectiveness and sensitivity of the MF-NES mechanism is significantly enhanced, particularly in responding to low frequency vibrations. To predict and quantify the friction coefficient of the MF, a novel hybrid approach combining data handling and a genetic algorithm model was developed and rigorously validated through empirical data obtained from the experiments and demonstrated that the bi-dispersed NIPs/CIPs MCF had a notably lower friction coefficient, making it adept at responding to low-frequency and even ultra-low-frequency vibrations.
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Carbonyls
Coefficient of friction
Energy consumption
Fluid dynamics
Friction reduction
Genetic algorithms
Iron
Load bearing elements
Magnetic fluids
Magnetic properties
Mechanical properties
Physics
Tribology
Vibration control
title Effects of micron–nano composite iron particle powders on the tribological properties of magnetic fluids used for a nonlinear energy sink vibration absorber
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