Optimal Design of Magnetorheological Valve Integrated in an Intelligent Footwear for Diabetic Patients with Foot Insensitivity

Duong, Trung; Ntella, Sofia Lydia; Jeanmonod, Kenny; Ren, Xiaotao; Civet, Yoan; Pataky, Zoltan; Perriard, Yves

doi:10.23919/icems52562.2021.9634313

Cited by 2 publications

(3 citation statements)

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“…Based on the previous mathematical analysis and using the Design of Experiments (DoE) and Response Surface Methodology (RSM) techniques, the design optimization of a miniaturized MR valve has been proposed in previous work (Duong et al, 2021). Firstly, the factors influencing the design were defined and their bounds, including current density and several geometrical dimensions.…”

Section: Annular Mr Valve Analytical Modelmentioning

confidence: 99%

“…The maximum sustained pressure drop Δ P max assuming no flow rate is calculated as 1157, 1125, and 696 kPa for the cases A, B, and C, respectively. The optimal valve is designed to sustain a maximum of 815 kPa (Duong et al, 2021). The simulation results indicate a decrease in this pressure.…”

Section: Modelingmentioning

confidence: 99%

“…The analytical model derives from already known models for annular MR valves with regard to flux density distribution and sustained pressure. The optimal valve design whose optimization is presented in previous work (Duong et al, 2021) is fabricated and validated experimentally. The phenomenon of flux fringing is observed as well as its consequences on the maximum sustained pressure by the valve.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and experimental study of a miniaturized magnetorheological valve with high performance

Ntella,

Koechli,

Perriard

2024

Journal of Intelligent Material Systems and Structures

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Magnetorheological (MR) valves attracted the interest of researchers across diverse fields, owing to the controllable nature of MR fluid. The use of MR fluid in valves enables fast response, energy efficiency, and robustness, while several studies designed MR valves that can sustain high-pressure. However, although these studies present efficient solutions, they are still unable to exist in miniaturized form while maintaining high-pressure-sustaining capabilities. This paper presents the analytical, numerical, and experimental analysis of a novel miniaturized cylindrical magnetorheological (MR) valve with high performance in terms of the maximum fluid pressure it is able to sustain. The study considers the flux fringing phenomenon that enhances the value of sustained pressure. The fabricated valve is validated experimentally in closed and open states, as well as during state switching. Finally, comparisons between the analytical, numerical, and experimental results are reported. The novel MR valve demonstrates a capacity to withstand at least 1 MPa of pressure with a volume of 353 mm3 and 3.2 g weight, unlike previous studies that report these values of pressure with valves of larger size and higher structure complexity. These results hold promise for applications demanding high pressure control in constrained spaces, such as medical ones or soft robotics.

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Section: Annular Mr Valve Analytical Modelmentioning

confidence: 99%

Section: Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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