Dynamical Modeling and Experimental Study of a Small-Scale Magnetorheological Damper

Case, David A.; Taheri, Behzad; Richer, Edmond

doi:10.1109/tmech.2013.2265701

Cited by 45 publications

(34 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before proceeding with the formulation and implementation of the coupled model, it seems necessary to summarize the different field [29]. Considering the temperature effect on the performance of the MR fluid, the viscosity gradually declines as the temperature rises within -40~100[℃] and after the temperature exceeds 100[℃] , the change of viscosity becomes irregular, which leads to unstable damping performance [30].…”

Section: Fluid Dynamicsmentioning

confidence: 99%

Transient multi-physics analysis of a magnetorheological shock absorber with the inverse Jiles–Atherton hysteresis model

Zheng

et al. 2015

Smart Mater. Struct.

View full text Add to dashboard Cite

This paper presents multi-physics modeling of a MR absorber considering the magnetic hysteresis to capture the nonlinear relationship between the applied current and the generated force under impact loading. The magnetic field, temperature field and fluid dynamics are represented by the Maxwell equations, Conjugate heat transfer equations and Navier-Stokes equations. These fields are coupled through the apparent viscosity and the magnetic force, both of which in turn depend on the magnetic flux density and the temperature. Based on a parametric study, an inverse JilesAtherton hysteresis model is used and implemented to the magnetic field simulation. The temperature rise of MR fluid in the annular gap caused by core loss (i.e. eddy current loss and hysteresis loss) and fluid motion are computed to investigate the performance of current-force behavior. A group of impulsive tests were performed for the manufactured MR absorber with step exciting currents. The numerical and experimental results showed good agreement, which validates the effectiveness of the proposed multi-physics FEA model.

show abstract

Section: Fluid Dynamicsmentioning

confidence: 99%

Transient multi-physics analysis of a magnetorheological shock absorber with the inverse Jiles–Atherton hysteresis model

Zheng

et al. 2015

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…The method used in this paper is the Bingham plastic model proposed by Case et al [25]. In this model, the continuous differentiability of yield stress is achieved by describing the plug flow region as a micro-flow region.…”

Section: Multi-physics Fe Modeling and Simulation Of The Mr Buffermentioning

confidence: 99%

Design of an Electromagnetic Variable Valve Train with a Magnetorheological Buffer

et al. 2019

View full text Add to dashboard Cite

In this paper, an electromagnetic variable valve train with a magnetorheological buffer (EMVT with MR buffer) is proposed. This system is mainly composed of an electromagnetic linear actuator (EMLA) and a magnetorheological buffer (MR buffer). The valves of an internal combustion engine are driven by the EMLA directly to open and close, which can adjust the valve lift and phase angle of the engine. At the same time, MR buffer can reduce the seat velocity of the valve and realize the seat buffer of the electromagnetic variable valve. In this paper, the overall design scheme of the system is proposed and the structure design, finite element simulation of the EMLA, and the MR buffer are carried out. The electromagnetic force characteristics of the EMLA and buffer force of the MR buffer are measured, and the seat buffering performance is verified as well. Experiments and simulation results show that the electromagnetic force of the EMLA can reach 320.3 N when the maximum coil current is 40 A. When the current of the buffer coil is 2.5 A and the piston’s motion frequency is 5 Hz, the buffering force can reach 35 N. At the same time, a soft landing can be realized when the valve is seated.

show abstract

“…First, the displacement data were collected. Then, the data series was incorporated into the mathematical model expressed by (3)- (9). Based on the proposed model, the simulated force can be calculated.…”

Section: B Parameter Identificationmentioning

confidence: 99%

“…For this reason, there has been much research into MRF-based dampers and they have been widely used to improve vibration attenuation. There has also been strong improvement in the control algorithms for MRFbased dampers [9]- [11]. Yao et al employed a skyhook control strategy to control an MRF damper for a vehicle suspension system [12].…”

mentioning

confidence: 99%

A Compact Variable Stiffness and Damping Shock Absorber for Vehicle Suspension

Sun

Deng

et al. 2015

IEEE/ASME Trans. Mechatron.

View full text Add to dashboard Cite

A shock absorber is an important device for vehicle suspension. The semi-active suspension requires the damping or stiffness of the shock absorber to be controllable. This paper proposed a novel compact shock absorber with both damping and stiffness variable characteristics. The shock absorber is developed based on MR fluid through an innovative design. A prototype is tested by MTS to characterize the variable damping and stiffness properties. A mathematical model that incorporated the Bingham model is established and an optimization method is adopted to identify the parameters. The coherence of experiments and the proposed model verified the control ability of dual damping and stiffness of the shock absorber.Index Terms-MR damper, semi-active vehicle suspension, shock absorber, variable stiffness and damping.

show abstract

Dynamical Modeling and Experimental Study of a Small-Scale Magnetorheological Damper

Cited by 45 publications

References 17 publications

Transient multi-physics analysis of a magnetorheological shock absorber with the inverse Jiles–Atherton hysteresis model

Transient multi-physics analysis of a magnetorheological shock absorber with the inverse Jiles–Atherton hysteresis model

Design of an Electromagnetic Variable Valve Train with a Magnetorheological Buffer

A Compact Variable Stiffness and Damping Shock Absorber for Vehicle Suspension

Contact Info

Product

Resources

About