Multiphysics Model of an MR Damper including Magnetic Hysteresis

Kubík, Michal; Gołdasz, Janusz

doi:10.1155/2019/3246915

Cited by 16 publications

(23 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only control studies can thus be supported with it. That is in contrast with the multiphysics technique presented by Kubik and Gołdasz (2019) where the authors showed a hybrid finite-element/lumped parameter approach that can be employed at a design stage.…”

Section: Discussionmentioning

confidence: 94%

“…Second, it allows taking into account the effects already in the design process. For instance, Kubik and Gołdasz (2019), in the parametric study on the MR damper dynamic behavior with the so-called vector hysteresis approach, showed that the use of such models may yield improvements in understanding the MR damper physics and deliver a better product. Simply analyzing prior art, e.g., the study of hysteresis of an MR brake as in An and Kwon (2003) accomplished with the Hodgdon model highlights significant advantages in predicting the output of the brake on including the magnetic hysteretic operator.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dual Hysteresis Model of MR Dampers

Gołdasz¹,

Sapiński

Jastrzębski

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

This study concerns the modeling of the hysteretic behavior of magnetorheological (MR) dampers. In general, hysteresis is one of key factors influencing the output of such actuators. So far, more attention has been paid to studying the combined hysteretic behavior of MR actuators by observing the relationships between the output (force/torque) and the inputs (current, velocity, and position). However, these devices feature two distinct hysteretic mechanisms: mechanical/hydraulic and magnetic. The mechanical hysteresis is of different nature than the magnetic hysteresis due to the properties of ferromagnetic materials forming the actuator's electromagnet circuit, and these should be split in the modeling process. In the present study, we separate the magnetic hysteresis from the mechanical/hydraulic one by investigating the magnetic flux vs. exciting current relationship of a commercial flow-mode MR damper subjected to sinusoidal current loading and independently of the mechanical excitations. The resulting behavior of the electromagnetic circuit is then examined using the non-linear inductor approach with hysteresis. Total hysteresis is then modeled using a non-linear inductor model in combination with a phenomenological parametric Maxwell type model of the damper.

show abstract

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Dual Hysteresis Model of MR Dampers

Gołdasz¹,

Sapiński

Jastrzębski

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Ansys for a magnetic model of the MR control valve. A more detailed description of this method is available in the document [1]. The presented transient magnetic model calculates the magnetic flux density response in the gap (air / MRF) on the current unit-step.…”

Section: Magnetic Modelmentioning

confidence: 99%

“…The magnetorheological (MR) damper utilizes magnetorheological (MR) fluid which, when subjected to magnetic stimuli, generates yield stress thus increasing its apparent viscosity [1]. MR fluid is a suspension of microsized ferromagnetic particles which are dispersed in the carrier fluid.…”

Section: Introductionmentioning

confidence: 99%

The magnetic circuit dynamics of a magnetorheological valve with a permanent magnet

2020

View full text Add to dashboard Cite

The magnetorheological (MR) damper uses magnetorheological fluid which, when subjected to magnetic stimuli, generates an increase of damping forces. A significant problem of these dampers is their poor failsafe ability due to power supply interruption. In the case of faults, the damper remains in a low damping state, which is dangerous. This problem can be solved by accommodating a permanent magnet in the magnetic circuit of the damper. However, the magnetic circuit dynamic of this type of damper has rarely been studied. The main aim of this paper is to introduce the magnetic circuit dynamics of the magnetorheological damper/control valve with a permanent magnet. Firstly, the design of the magnetorheological valve with NdFe42 permanent magnet in the magnetic circuit is introduced. The response time of the magnetic field on the unit step of the control signal was calculated by transient magnetic simulation in Ansys Electronics software. The response time of the magnetic field was simulated in the range of 1.2 to 5 ms depending on the electric current magnitude and orientation. The presented MR damper was manufactured and tested. The experiments prove that the permanent magnet significantly affects the dynamics of the magnetic circuit.

show abstract

“…The cohesion of chain formations causes an increase in the apparent viscosity of MR fluid [ 2 ]. This property is most often exploited by MR dampers [ 3 , 4 , 5 ], brakes/clutches [ 6 , 7 , 8 ], seals [ 9 , 10 ], or flexible structures [ 11 , 12 ]. The applicability of these MR devices in smart mechanical systems has several limitations.…”

Section: Introductionmentioning

confidence: 99%

Stribeck Curve of Magnetorheological Fluid within Pin-on-Disc Configuration: An Experimental Investigation

et al. 2020

View full text Add to dashboard Cite

The paper focuses on the coefficient of friction (COF) of a magnetorheological fluid (MRF) in the wide range of working conditions across all the lubrication regimes—boundary, mixed, elastohydrodynamic (EHD), and hydrodynamic (HD) lubrication, specifically focused on the common working area of MR damper. The coefficient of friction was measured for MR fluids from Lord company with concentrations of 22, 32, and 40 vol. % of iron particles at temperatures 40 and 80 °C. The results were compared with a reference fluid, a synthetic liquid hydrocarbon PAO4 used as a carrier fluid of MRF. The results show that at boundary regime and temperature 40 °C all the fluids exhibit similar COF of 0.11–0.13. Differences can be found in the EHD regime, where the MR fluid COF is significantly higher (0.08) in comparison with PAO4 (0.04). The COF of MR fluid in the HD regime rose very steeply in comparison with PAO4. The effect of particle concentration is significant in the HD regime.

show abstract

Multiphysics Model of an MR Damper including Magnetic Hysteresis

Cited by 16 publications

References 40 publications

Dual Hysteresis Model of MR Dampers

Dual Hysteresis Model of MR Dampers

The magnetic circuit dynamics of a magnetorheological valve with a permanent magnet

Stribeck Curve of Magnetorheological Fluid within Pin-on-Disc Configuration: An Experimental Investigation

Contact Info

Product

Resources

About