A phenomenological model of magnetorheological damper considering fluid deficiency

Jiang, Rilang; Rui, Xiaoting; Wei, Min; Yang, Fufeng; Zhu, Hongtao; Gu, Lilin

doi:10.1016/j.jsv.2023.117851

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…In recent years, numerous scholars have designed various MRDs [26][27][28], and high-fidelity theoretical modeling is not only instrumental to comprehend the working mechanism of complex MRD structures, but provides guidance for the design, manufacturing and performance optimization of MRDs [29], thus the theoretical modeling of MRDs has become a research focus in recent years. The theoretical modeling of MRDs can be broadly divided into parametric and non-parametric models [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Dual-stage theoretical model of magnetorheological dampers and experimental verification

Lei,

Li,

Zhou

et al. 2024

Smart Mater. Struct.

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The theoretical model for predicting the damping characteristics of magnetorheological dampers (MRDs) not only facilitates the optimization of MRD parameters, but also provides assistance for the theoretical design of MRDs. However, some existing models have limitations in fully characterizing the damping characteristics of MRDs. In this paper, the workingstageof MRDs was categorized into yield and pre-yield stages based on whether the internal magnetorheological fluid (MRF) attains the dynamic shear yield state or not, and the Herschel-Bulkley model with pre-yield viscosity(HBPV) and improved polynomial model (IPOL) were employed to respectively characterize the yield and pre-yield stages of MRDs. Subsequently, the HBPV-IPOL model was proposed to characterize the complete damping characteristics of MRDs in low-frequency vibration conditions, with considering the local loss effect of the fluid in the model. To accurately characterize the magnetic induction intensity in the MRD damping channel, employing the steady-state finite element method (FEM) for magnetic field analysis; on this basis, dividing the damping channel to investigate the variation trends of the magnetic induction intensity in different regions. Simultaneously, the zero-field region hypothesis was proposed to quantitatively consider the influence of minute magnetic induction intensity in the traditional zero-field regions on the damping characteristics of MRDs. Finally, integrating the impact trends of currents in different regions, and employing the HBPV model to determine the impact magnitude of each region within the damping channel on the damping characteristics of the MRD in the yield stage. In the pre-yield stage, Polynomial curves were fitted to experimental damping force-velocity curves, and the obtained polynomials were employed to predict the damping characteristics. Extensive experiments have been conducted on MRD samples to assess the predictive performance of the model on MRD damping characteristics under sinusoidal displacement excitation vibration conditions with different excitation currents, vibration frequencies and vibration amplitudes.

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Section: Introductionmentioning

confidence: 99%

Dual-stage theoretical model of magnetorheological dampers and experimental verification

Lei,

Li,

Zhou

et al. 2024

Smart Mater. Struct.

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“…Magnetorheological (MR) fluid, which is a suspension of micrometer-scale magnetic particles in non-magnetic carrier fluid, exhibits rheological properties dependent upon magnetic field [21]- [24]. In order to realize quick response and good controllability for system, researchers have introduced magnetorheological fluid dampers (MRDs) into a seat suspension for improving vibration isolation performance [25] [26].…”

Section: Introductionmentioning

confidence: 99%

Geometric nonlinear effect on isolation performance for a scissor-like magnetorheological seat suspension

Li,

Dong

2023

Preprint

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Scissor-like seat suspensions (SL-SSs) with magnetorheological damper (MRD) has been commonly studied and applied successfully in vehicle vibration isolation. However, in most cases, modeling for scissor-like isolation structure is still inaccurate because of overlook on MRD’s layout. In this paper, effect of geometric nonlinearity by MRD’s installation position on the vibration isolation performance of a SL-SS is investigated. A dynamic parametric model of the SL-SS with six assembly types is derived considering geometric nonlinearity based on Lagrange equation. Then, the parameter analysis is performed to estimate magnetorheological damping function in SL-SS. The displacement transmissibility is solved via harmonic balance method, and its effectiveness is validated with numerical results. Finally, comparative study on displacement transmissibility for six assemble types is carried out, and metrics are introduced to access the isolation capabilities of the SL-SS. The results show that the system in type 3 has wider isolation band than other types. And the results also reveal that for type 1, 3 and 6, a minimum isolation frequency may realize, meanwhile, the maximum peak transmissibility also inevitably occurs; for type 5, increasing horizontal distance between installation points of MRD broadens isolation band, but leads to increment of peak transmissibility.

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Nonlinear passive magnetorheological damping characteristics of the scissor-like isolation platform

Li,

Dong

2024

Arch Appl Mech

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A phenomenological model of magnetorheological damper considering fluid deficiency

Cited by 7 publications

References 29 publications

Dual-stage theoretical model of magnetorheological dampers and experimental verification

Dual-stage theoretical model of magnetorheological dampers and experimental verification

Geometric nonlinear effect on isolation performance for a scissor-like magnetorheological seat suspension

Nonlinear passive magnetorheological damping characteristics of the scissor-like isolation platform

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