Self-adapting model for variable stiffness magnetorheological dampers

Lian, Xinyu; Deng, Huaxia; Han, Guanghui; Ma, Mengchao; Zhong, Xiaoming; Gao, Yuexiao; Hu, Rongchang

doi:10.1088/1361-665x/ac3f79

Cited by 6 publications

(9 citation statements)

References 29 publications

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“…At this time, the velocity of the piston of the external cylinder is infinitesimally small and approaches zero. The critical (Sun et al, 2015a) (E) characteristic of small motion damper (Lian et al, 2021).…”

Section: Figurementioning

confidence: 99%

“…In addition to the Bingham model and Bouc-wen model, the piecewise function model is used to describe the variable stiffness characteristics (Xu et al, 2014;Huang et al, 2019;Sun et al, 2019). An adaptive model parameter identification method is also necessary (Lian et al, 2021). In the control strategy, simple sky-hook control is still the most widely used (Morales et al, 2018).…”

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confidence: 99%

“…FIGURE 8 Variable stiffness and damping MRF damper with double spring (A) Damper with a larger motion (Deng et al, 2017) (B) characteristic of large motion damper (Deng et al, 2017) (C) Damper with a small motion (Lian et al, 2021) (D) Damper with multi-spring(Sun et al, 2015a) (E) characteristic of small motion damper(Lian et al, 2021).…”

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confidence: 99%

“…FIGURE 11 The model with Bingham components (A) The schematic diagram (Lian et al, 2021) (B) Comparison of experimental and simulation results under variable stiffness (Sun et al, 2015b) (C) Comparison of experimental and simulation results under variable damping (Sun et al, 2015b) (D) Schematic diagram of the self-adapting model (Lian et al, 2021) (E) The variable stiffness characteristic curve of damper fitted by the self-adapting model(Lian et al, 2021).…”

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A brief review of variable stiffness and damping magnetorheological fluid dampers

2022

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With the development of magnetorheological fluid (MRF) technology, variable stiffness and damping MRF dampers as semi-active controllers gradually show their unique advantages in the vibration control field. This paper reviews recent journal articles on the principles, characteristics, structure design, modelling and applications of variable stiffness and damping MRF dampers. The principle includes the force behaviour of the MRF fluid and the mechanism of the variable stiffness and damping MRF damper. Characteristics introduce the damper’s force-displacement relationships, which have frequency dependence and amplitude dependence. Following this, typical dampers structures are discussed, including electromagnetic design and coil configuration. After that, some common models and parameter optimization methods are presented. Furthermore, taking vehicle suspension as an example, the applications of variable stiffness and damping MRF dampers in some fields are proposed in this paper.

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Section: Figurementioning

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A brief review of variable stiffness and damping magnetorheological fluid dampers

2022

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“…[9][10][11] Traditional variable damping and microfluidic devices often adjust the damping or flow rate by manipulating the number or size of channels, which frequently results in significant hysteresis in their behavior. [12][13][14] To overcome these limitations, it is believed that replacing hydraulic oil with MR fluids in traditional variable damping vibration reduction and microfluidic devices can effectively realize these functions by harnessing the unique characteristics of MR fluids, aligning with the current trend of intelligent development.…”

Section: Introductionmentioning

confidence: 99%

Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Du,

Zhao,

Liu

et al. 2023

Adv Funct Materials

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Magnetorheological (MR) fluids are magnetic responsive smart materials that are widely used in real‐time damping adjustment devices. However, a major challenge for MR fluids is balancing the constraints relationship among various key performances. This study demonstrates that by utilizing home‐made high saturation magnetization (208.0 emu g−1) nanoparticles as the second component in the preparation of cross‐scale bidisperse MR fluids, the shortcomings of monodisperse micron particles performance can be compensated, effectively balancing the relationship between various performances. This is attributed to the fact that the addition of nanoparticles enhances the density of chain structures under an applied magnetic field, while reducing the overall particle density without a magnetic field. By replacing part of micron particles with nanoparticles, the phenomenon of significant increase in zero‐field viscosity caused by the direct introduction of nanoparticles is avoided. The optimal content of nanoparticles in MR fluids is preliminarily explored, and the results indicate that Micro‐Nano bidisperse MR fluids exhibit a high dynamic yield strength (58.3 kPa when 436 kA m−1), excellent sedimentation stability (82.6% when 7 days), suitable zero‐field viscosity (1.25 Pa s when 100 s−1), and ideal reversibility. Most importantly, the simple preparation method adds significant engineering application value to these MR fluids.

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Design and experimental characterization of a bypass magnetorheological damper featuring variable stiffness and damping

Abdalaziz

Vatandoost

Rakheja

2023

Smart Mater. Struct.

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Magnetorheological (MR) fluid dampers (MRFDs) with variable damping and variable stiffness capability (VSVD-MRFDs) have demonstrated excellent vibration mitigation performance. However, there are limited studies on the development of bypass VSVD-MRFDs which offer both higher dynamic range and output force, apart from simple maintenance and straightforward assembly. In this study, a novel large-capacity VSVD-MRFD with an annular-radial bypass MR valve, as opposed to the typical practice of implementing the valve within the traveling piston in the hydraulic cylinder of the MRFD, is proposed. The main contribution of the present work includes: (i) providing the conceptional design and experimental dynamic characterization of the proposed VSVD-MRFD; (ii) investigating the feasibility of the proposed damper for realizing the VSVD characteristics under wide ranges of loading conditions. A test rig was, thus, designed to perform experimental characterization of the proposed VSVD-MRFD under wide ranges of mechanical loading and magnetic field conditions. A qualitative analysis including force-displacement, and force-velocity characteristics, together with a quantitative analysis including dynamic range, equivalent viscous and stiffness coefficients, were conducted as a function of loading frequency, displacement amplitude, and applied current. Results showed a maximum dynamic range and maximum output force of 4.5 and 7.8 kN, respectively. Also, the maximum relative increase in the equivalent viscous and stiffness coefficients were obtained, respectively, as 425% and 488%, when the applied current is increased from zero to 2 A. The results confirm the potential of the proposed VSVD-MRFD for applications in off-road suspension systems. The externally designed bypass MR valve permits a straightforward design modification for realizing wide scalability of damping force in different applications (e.g., off-road vehicle suspension systems).

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Self-adapting model for variable stiffness magnetorheological dampers

Cited by 6 publications

References 29 publications

A brief review of variable stiffness and damping magnetorheological fluid dampers

A brief review of variable stiffness and damping magnetorheological fluid dampers

Balanced Devil Triangle: A Satisfactory Comprehensive Performance Magnetorheological Fluids with Cross‐Scale Particles

Design and experimental characterization of a bypass magnetorheological damper featuring variable stiffness and damping

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