Experimental investigation into magnetorheological damper subjected to impact loads

Xiang, Hengbo; Fang, Qin; Ziming, Gong; Wu, Hao

doi:10.1007/s12209-008-0093-8

Cited by 14 publications

(17 citation statements)

References 11 publications

(9 reference statements)

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“…The parametric approach uses the physical quantities of systems while the nonparametric SI method trains the input-output map of the system to define the architecture of the mathematical model [32,[40][41][42]. There exist few studies that performed the parametric system identification of MR dampers subjected to high impact loads [3,43,44]. Xiang et al [44] presented a parametric study to predict the shock isolation performance of MR dampers under impact loads.…”

Section: System Identificationmentioning

confidence: 99%

“…There exist few studies that performed the parametric system identification of MR dampers subjected to high impact loads [3,43,44]. Xiang et al [44] presented a parametric study to predict the shock isolation performance of MR dampers under impact loads. A RD-1005-3-type MR damper was tested under impact loads at different constant current signals.…”

Section: System Identificationmentioning

confidence: 99%

“…Thus, instead of using a typical Bouc-Wen model, they proposed a modified Bouc-Wen model to predict the nonlinear behavior of MR dampers under impact loads. It was demonstrated that the modified Bouc-Wen model has a good performance in predicting the impact response of MR dampers [44]. However, the model was not tested under a variety of current signals; that is, not random but constant current signals were investigated.…”

Section: System Identificationmentioning

confidence: 99%

“…A Bouc-Wen model has been commonly accepted in the field of MR damper technology [13,44,62]. The restoring force of the MR damper is described as follows:…”

Section: Bouc-wen Modelmentioning

confidence: 99%

“…To apply the Bouc-Wen model by Dominguez et al [64] to the high impact force estimation of the MR damper, Xiang et al [44] updated the equations of Dominguez et al [64] to estimate the dynamic behaviors of MR dampers under high impact loads. Xiang et al [44] modified the damping coefficient, the elastic coefficient, and the evolutionary variable as follows:…”

Section: Bouc-wen Modelmentioning

confidence: 99%

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Modeling of Magnetorheological Dampers under Various Impact Loads

Arsava

Kim

2015

Shock and Vibration

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Magnetorheological (MR) damper has received great attention from structural control engineering because it provides the best features of both passive and active control systems. However, many studies on the application of MR dampers to large civil structures have tended to center on the modeling of MR dampers under seismic excitations, while, to date, there has been minimal research regarding the MR damper model under impact loads. Hence, this paper investigates nonlinear models of MR dampers under a variety of impact loads and control signals. Two fuzzy models are proposed for modeling the nonlinear impact behavior of MR dampers. They are compared with mechanical models, the Bingham and Bouc-Wen models. Experimental studies are performed to generate sets of input and output data for training, validating, and testing the models: the deflection, acceleration, velocity, and current signals. It is demonstrated that the proposed fuzzy models are effective in predicting the complex nonlinear behavior of the MR damper subjected to a variety of impact loads and control signals. The proposed fuzzy model resulted in an accuracy of 99% to predict the impact forces of the MR damper.

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Section: System Identificationmentioning

confidence: 99%

Section: System Identificationmentioning

confidence: 99%

Section: System Identificationmentioning

confidence: 99%

“…A Bouc-Wen model has been commonly accepted in the field of MR damper technology [13,44,62]. The restoring force of the MR damper is described as follows:…”

Section: Bouc-wen Modelmentioning

confidence: 99%

Section: Bouc-wen Modelmentioning

confidence: 99%

See 3 more Smart Citations

Modeling of Magnetorheological Dampers under Various Impact Loads

Arsava

Kim

2015

Shock and Vibration

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Hybrid modeling of the nonlinear behaviors for magnetorheological energy absorber

Shou

Liao²,

Yang³

et al. 2023

International Journal of Mechanical Sciences

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Dynamic analysis of an SDOF helicopter model featuring skid landing gear and an MR damper by considering the rotor lift factor and a Bingham number

Saleh¹,

Bhat²

2018

Smart Mater. Struct.

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The present study addresses the performance of a skid landing gear (SLG) system of a rotorcraft impacting the ground at a vertical sink rate of up to 4.5 ms−1. The impact attitude is assumed to be level as per chapter 527 of the Airworthiness Manual of Transport Canada Civil Aviation and part 27 of the Federal Aviation Regulations of the US Federal Aviation Administration. A single degree of freedom helicopter model is investigated under different values of rotor lift factor, L. In this study, three SLG versions are evaluated: (a) standalone conventional SLG; (b) SLG equipped with a passive viscous damper; and (c) SLG incorporated a magnetorheological energy absorber (MREA). The non-dimensional solutions of the helicopter models show that the two former SLG systems suffer adaptability issues with variations in the impact velocity and the rotor lift factor. Therefore, the alternative successful choice is to employ the MREA. Two different optimum Bingham numbers for compression and rebound strokes are defined. A new chart, called the optimum Bingham number versus rotor lift factor ‘ ’, is introduced in this study to correlate the optimum Bingham numbers to the variation in the rotor lift factor and to provide more accessibility from the perspective of control design. The chart shows that the optimum Bingham number for the compression stroke is inversely linearly proportional to the increase in the rotor lift factor. This alleviates the impact force on the system and reduces the amount of magnetorheological yield force that would be generated. On the contrary, the optimum Bingham number for the rebound stroke is found to be directly linearly proportional to the rotor lift factor. This ensures controllable attenuation of the restoring force of the linear spring element. This idea can be exploited to generate charts for different landing attitudes and sink rates. In this article, the response of the helicopter equipped with the conventional undamped, damped, and MREA based SLG are numerically simulated using three sets of Bingham numbers. Namely, an underestimated, optimum, and overestimated Bingham number for every stroke. The simulation results depict that the only feasible solution is when the MREA generates the optimum damping force corresponding to the optimum Bingham numbers. Under this circumstance, the MREA utilizes the available energy absorption stroke to attain a soft landing. Furthermore, in the rebound stroke, the optimum damping force resettles the helicopter to its equilibrium position and prevents oscillations after the end of the rebound stroke.

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Experimental investigation into magnetorheological damper subjected to impact loads

Cited by 14 publications

References 11 publications

Modeling of Magnetorheological Dampers under Various Impact Loads

Modeling of Magnetorheological Dampers under Various Impact Loads

Hybrid modeling of the nonlinear behaviors for magnetorheological energy absorber

Dynamic analysis of an SDOF helicopter model featuring skid landing gear and an MR damper by considering the rotor lift factor and a Bingham number

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