Design and Fabrication of 500-kN Large-scale MR Damper

Tu, Jianwei; Liu, Jifeng; Qu, Weilian; Zhou, Qiang; Cheng, Hui; Cheng, Xiaomin

doi:10.1177/1045389x11399942

Cited by 43 publications

(31 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Giorgetti et al (2010) have designed a rotary MR damper, remarkably decreasing MR fluid sedimentation and wear of the seal device, and improving the damper durability. Tu et al (2011) have sprayed a hard alloy coat onto the damper piston rod to improve its rigidity and delay its nicking damage, which can effectively lengthen the damper service life. Yan et al (2013) have stored MR material with porous metallic foams in the damper to make a porous metallic foam MR damper, which can effectively reduce its leakage without a sophisticated seal.…”

Section: Introductionmentioning

confidence: 99%

Development, Test, and Mechanical Model of the Leak-Proof Magnetorheological Damper

Zhao

Zhang

et al. 2019

Front. Mater.

View full text Add to dashboard Cite

As a semi-active control device, the magnetorheological (MR) damper has received much praise for its great controllability, quick response, and lower input power. However, the problem of liquid leakage arises after its long-term service, severely affecting its performance and service life. To solve this problem, this paper proposes fully vulcanizing and consolidating viscoelastic material, the cylinder barrel and the piston rod, which replaces the traditional dynamic seal with a static seal, and developing a new leak-proof MR damper. Considering that viscoelastic material has a certain energy dissipation and fluid-structure interaction with MR fluid, the correction factor of the pressure gradient is introduced to establish the mechanical model of the leak-proof MR damper which is to be tested. The testing result shows that warpage deformation of viscoelastic material weakens the damping force of the MR damper and the weakening effect increases with current intensity. Given the influence of current intensity on the correction factor, the complete mechanical model of the leak-proof MR damper is obtained on the basis of the verified model. Through the comparison between the theoretical calculation curve and the test curve, the revised mechanical model is found to well reflect the mechanical properties of the leak-proof MR damper.

show abstract

Section: Introductionmentioning

confidence: 99%

Development, Test, and Mechanical Model of the Leak-Proof Magnetorheological Damper

Zhao

Zhang

et al. 2019

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…To this end, a little MR fluid in a glass measuring cylinder with total height "a" is considered, after a while, the height of the settled MR fluid is measured as "b". Furthermore, sedimentation rate of the MR fluid is calculated as a/l × 100 [56]. The sedimentation rate of the MR fluid is calculated during 20 days as Fig.…”

Section: The Experimental Results Of the Testing Of Mr Fluidmentioning

confidence: 99%

Mathematical modeling and experimental evaluation of a prototype double-tube Magnetorheological damper

et al. 2019

View full text Add to dashboard Cite

The performance of Magnetorheological dampers should be analyzed to study the stability of Magnetorheological fluid and its configuration. To this end, in this study a prototype Magnetorheological fluid is presented. The fluid consists of stabilized Silicone dioxide (SiO 2) nanoparticles, Stearic acid, Phosphoric acid and micron-sized soft ferromagnetic carbonyl iron particles. To assure the authentic performance, sedimentation and magneto-rheometry tests are conducted. Also, a prototype of double-tube Magnetorheological damper with double magnetic components is fabricated by using the mentioned magnetorheological fluid characteristics. Damping force measurement test is carried out to measure the damping force in various electrical currents. The Kwok model is employed to examine the analytical model predictions against the experiments. Furthermore, a general evolution is presented using the neural network algorithm. It is demonstrated that the damping force in saturated current is almost five times higher than in the zero current. In addition, the derived evolution for the damping force has a high performance to predict the response of the Magnetorheological damper in other electrical currents.

show abstract

“…MRF-based energy absorbers (MREAs) are demonstrated to be effective for vibration control (Wang and Gordaninejad, 1998; Yao et al, 2002) since they can dynamically adjust their parameters (Lau and Liao, 2009). They have been widely investigated and used in various applications where adjustable or controllable resistive loads are needed, such as engine mounts (Liao et al, 2013; Nguyen et al, 2013), ground vehicle primary suspension dampers (Bai and Wereley, 2014; Simon and Ahmadian, 2001), the magnetorheological (MR) damper in the vibration reduction of engineering structures (Spencer et al, 1997; Tu et al, 2011), and jet polishing (Li et al, 2014). Owing to high-frequency usage in these applications, the MRF in the MREAs can maintain its original particle concentration for the entire period prior to its use and be ready without prior mixing at the time of the energy absorbing event.…”

Section: Introductionmentioning

confidence: 99%

Effective design strategy for a high-viscosity magnetorheological fluid–based energy absorber with multi-stage radial flow mode

Liao

et al. 2018

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

High-viscosity linear polysiloxane-based magnetorheological fluid features its excellent suspension stability. Few reports could be found for magnetorheological energy absorbers using such highly viscous but highly stable magnetorheological fluids as the controlled medium. This study presents a design strategy for the high-viscosity linear polysiloxane-based magnetorheological fluid-based magnetorheological energy absorber with multi-stage radial flow mode. The design strategy is based on the Herschel-Bulkley flow model incorporating minor losses proposed in our prior work. The optimal geometrical parameters were obtained by gradually reducing the number of unknown variables. By analyzing the effect of thicknesses of baffle and outer cylinder and number of coil turns on magnetic circuit, the distribution of magnetic flux in the effective region of magnetorheological valve was optimized. Furthermore, a magnetorheological energy absorber was fabricated and tested using a high-speed drop tower facility with a 600 kg mass. The maximum nominal impact velocity was 4.2 m/s, and the applied current varied discretely from 0, 1, 2, to 3 A. Comparison of our Herschel-Bulkley flow model with measured data was conducted via analysis of peak force, dynamic range, and maximum displacement that indicate the performance of magnetorheological energy absorber. The results validated the effectiveness of the design strategy for the high-viscosity linear polysiloxane-based magnetorheological fluid-based magnetorheological energy absorber.

show abstract

Design and Fabrication of 500-kN Large-scale MR Damper

Cited by 43 publications

References 5 publications

Development, Test, and Mechanical Model of the Leak-Proof Magnetorheological Damper

Development, Test, and Mechanical Model of the Leak-Proof Magnetorheological Damper

Mathematical modeling and experimental evaluation of a prototype double-tube Magnetorheological damper

Effective design strategy for a high-viscosity magnetorheological fluid–based energy absorber with multi-stage radial flow mode

Contact Info

Product

Resources

About