Effect of a uniform magnetic field on magnetorheological fluid under an impact load

Moroka, Yoshitaka; Isnikurniawan, Ahmad; Ohba, Hiromichi; Sawada, Tatsuo

doi:10.3233/jae-2012-1512

Cited by 5 publications

(3 citation statements)

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“…They demonstrated that an MR fluid is adaptable to a wide-range of shock-loading strengths. Our previous studies investigated effects of orifice diameter, magnetic field strength [4], and chamfered orifice inlet [5] on the behavior of an MR fluid under shock loading. These studies showed that orifice diameter has a strong influence on the displacement, velocity, and acceleration of a piston, whereas magnetic field strength has a strong influence on piston displacement.…”

Section: Fig 1 An Orifice and A Tapered Metering Pinmentioning

confidence: 99%

Effect of Tapered Metering Pin on Magnetorheological Fluid Subjected to Shock Loading

Shimizu

Takagi

Sawada³

2016

MSF

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This study reports on effects of tapered metering pins on a magnetorheological (MR) fluid subjected to shock loading. Using four types of tapered metering pins, we conducted drop impact tests and qualitative analysis of effects of tapered pins on an MR fluid with a magnetic field applied around an orifice area. We measured the displacement of a piston and calculated velocity and acceleration from the measured displacement. The four different tapered pins changed a piston stroke to bring the impacting mass to rest. The results indicated that the shape of the pins has an effect on the entire process of shock absorption, whereas magnetic field strength has an effect on the post-peak behavior only. These results show that a tapered metering pin has applicability to a shock absorber using an MR fluid.

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Section: Fig 1 An Orifice and A Tapered Metering Pinmentioning

confidence: 99%

Effect of Tapered Metering Pin on Magnetorheological Fluid Subjected to Shock Loading

Shimizu

Takagi

Sawada³

2016

MSF

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“…[1][2][3][4] A magnetic field is a necessary condition for MRF to produce magnetorheological effect, for this reason, most of the current studies also analyze the relationship between the magnitude of magnetic field intensity and the mechanical properties and other rheological properties of MRF from the perspective of the magnetic field. [5][6][7][8][9] Instead, this article focuses on the effect of temperature, especially the effect of temperature-magnetic field coupling on the mechanics properties of MRF. Wang et al [10] used a self-developed MRF shear stress test device with temperature control function to test the rheological properties of MRF with different formulations.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Temperature–Magnetic Field Coupling on the Mechanical Properties of Magnetorheological Fluids

Luo

et al. 2021

Physica Rapid Research Ltrs

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The composition of a magnetorheological fluid (MRF) usually includes magnetic particles, a carrier fluid, and additives. Among them, the magnetic particles and carrier fluid are the main sources of the mechanical properties of the MRF. The changes of the related properties of the two will affect the mechanical properties of the MRF directly or indirectly. Herein, first, the temperature–magnetic field characteristics are analyzed during the MRF working process. Then, the influence mechanism of temperature and magnetic field changes on the properties of the magnetic particles and carrier liquid are analyzed. On this basis, the traditional Bingham model is improved and optimized, in which the temperature variable is introduced to represent the effect of temperature–magnetic field coupling on the shear stress of the MRF. Finally, parameter fitting and simulation are carried out for the optimized model, and the self‐made shear stress of the MRF measuring device with temperature‐control function is used to experimentally verify the accuracy of the optimized model. The comparison and verification of the results show that the optimized model can better represent the variation of shear stress of an MRF with temperature and magnetic field than the traditional Bingham model.

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“…Browne et al [5] examined the performance of an MR shock absorber by conducting drop impact tests with an energy absorber. We examined the influence of the orifice diameter, the magnetic field strength, and the orifice shape on the MR fluid flow under an impact load [6,7]. These studies showed that the orifice diameter has a great effect on the displacement, velocity, and acceleration of the piston and that the magnetic field strength significantly affects the piston stroke to stop the impact mass.…”

Section: Introductionmentioning

confidence: 99%

Changes in the Resistance Force of a Magneto-Rheological Shock Absorber Induced by a Magnetic Field

Sawada

Endo

Shimizu

et al. 2018

MSF

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In this study, we report the theoretical resistance force of a magneto-rheological (MR) shock absorber. We use the Bingham plastic model to theoretically represent the dynamic behavior of MR fluid flow in a circular pipe under the effect of a magnetic field. Because an MR fluid has yield stresses, the flow is divided into two regions: shear flow and plug flow. We reveal the relation between the resistance force of the MR shock absorber and the applied magnetic field. We conduct experiments and compare the experimental and analytical results to verify the theoretical approach.

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Effect of a uniform magnetic field on magnetorheological fluid under an impact load

Cited by 5 publications

References 0 publications

Effect of Tapered Metering Pin on Magnetorheological Fluid Subjected to Shock Loading

Effect of Tapered Metering Pin on Magnetorheological Fluid Subjected to Shock Loading

Study on the Influence of Temperature–Magnetic Field Coupling on the Mechanical Properties of Magnetorheological Fluids

Changes in the Resistance Force of a Magneto-Rheological Shock Absorber Induced by a Magnetic Field

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