Magnetic field enhancement technique in the fluid flow gap of a single coil twin tube Magnetorheological damper using magnetic shields

Ganesha, A; Patil, Suraj; Kumar, Nitesh; Murthy, Amar A

doi:10.15282/jmes.14.2.2020.11.0523

Cited by 11 publications

(6 citation statements)

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“…Therefore, adjusting the current in the piston coil can be a good way to adjust the damping force. As shown in Figure 1, the coil winding modes of the dampers are divided into single-coil [15] and double-coil [6] modes. The structure of the single-coil shear valve magnetorheological damper is shown in Figure 2.…”

Section: Parametric Modeling Of Single-coil Mr Dampermentioning

confidence: 99%

Design and Structure Optimization of Arresting Gear Based on Magnetorheological Damper

Hao,

Wang,

Peng

et al. 2023

Aerospace

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The UAV cluster combat puts forward higher requirements for short-distance arresting gears for multitype aircraft. Based on magnetorheological technology, an arresting gear was designed, and the structural parameters of the MR damper were optimized. An iterative optimization method of structural parameters via a genetic algorithm combined with parametric modeling and magnetic field simulation was proposed. The optimization method was applied to optimize the structure of both a single-coil and double-coil damper. The performance of the optimized arresting gear was studied. The results show that, under the same zero field damping upper limit, the variation range of the damping force of the double coil increases by 10.2% compared with that of the single coil. Comparing the peak overload of UAV before and after the optimization, when the UAV mass increases from 4000 kg to 10,000 kg, the reduction in the peak acceleration is increased from 19.8% to 25.4%. Compared with traditional hydraulic arresting gear, the new arresting gear has good adaptability to UAVs with various qualities and has higher arresting efficiency. This arresting gear has a certain advanced nature.

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Section: Parametric Modeling Of Single-coil Mr Dampermentioning

confidence: 99%

Design and Structure Optimization of Arresting Gear Based on Magnetorheological Damper

Hao,

Wang,

Peng

et al. 2023

Aerospace

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“…In combination with Equations ( 13) and ( 16) to (19), the electromagnetic field distribution inside the MR damper can be described as:…”

Section: Electromagnetic Field Modelmentioning

confidence: 99%

“…Only the state of its internal stable magnetic field was analyzed. The current density was applied to the excitation coil area according to Equation (19). The distribution of the electromagnetic field inside the proposed damper when the given current was 1 A is shown in Figure 7.…”

Section: Simulation Analysis Of Electromagnetic Fieldmentioning

confidence: 99%

“…To analyze its magnetic field characteristics, the internal magnetic field distribution of the damper was obtained by simulation when only a permanent magnet acted on it and when electromagnet and permanent magnet acted on it together. Ganesha et al [19] designed a single-coil twin-tube MR damper. To research the influence of the built-in magnetic shielding layer on the magnetic field, the magnetic field enhancement technologies of single cylinder shielding and sandwich cylinder shielding were introduced into the damper, and the magnetic flux density of the damper under different shielding structures was obtained through simulation.…”

Section: Introductionmentioning

confidence: 99%

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Damping Performance Analysis of Magnetorheological Damper Based on Multiphysics Coupling

Deng

et al. 2021

Actuators

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Magnetorheological (MR) damper performance is evaluated only by single-field analysis in the design process, which can easily lead to larger design errors. Based on this, a simulation method of MR damper considering multiphysics coupling was proposed. According to a certain automobile shock absorber requirement, an MR damper suitable for automobile suspension was designed. The mechanical model, electromagnetic field model, flow field model, and structural stress field model of the MR damper were deduced and established. To investigate the damping performance of the MR damper more accurately, the multiphysics coupling simulation model was established by COMSOL software, and coupling analysis of the electromagnetic field, flow field, and structural stress field was also carried out. The static magnetic field characteristics, dynamic flow field characteristics, stress distribution, and dynamic performance of the proposed MR damper under the action of multiphysics coupling were obtained. The simulation results show that the damping force is 1134.6 N, and the damping adjustable coefficient is 9.1 at an applied current of 1.4 A. A test system was established to analyze the dynamic performance of the MR damper, and the simulation results were compared with the experimental results. The results show that the simulated and experimental results have the same change rule. Moreover, the damping force increases with the applied current, and different external excitations have little effect on the damping force. The damper can output appropriate damping force and has a wide adjustable damping range. The experimental results illustrate that the damping force is 1200.0 N, and the damping adjustable coefficient is 10.1 when the current is 1.4 A. The error between simulation and experiment of the damping force and damping adjustable coefficient is only 5.5% and 9.9%, respectively.

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“…When constructing twin-tube MR dampers that are outfitted with a single coil, it is common to practice using magnetic shields and sandwiched magnetic shields. This research was conducted by Ganesha et al [15] and concluded that the experiment was successful, as evidenced by improvements in suspension control, ride comfort, and deflection of tires.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation on Small Scale Magnetorheological Damper

Sharma

Hemalatha

2022

IJE

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Magnetic field enhancement technique in the fluid flow gap of a single coil twin tube Magnetorheological damper using magnetic shields

Cited by 11 publications

References 0 publications

Design and Structure Optimization of Arresting Gear Based on Magnetorheological Damper

Design and Structure Optimization of Arresting Gear Based on Magnetorheological Damper

Damping Performance Analysis of Magnetorheological Damper Based on Multiphysics Coupling

Numerical and Experimental Investigation on Small Scale Magnetorheological Damper

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