Results 181 to 190 of about 2,217 (221)

Electromagnetic Design of a Magnetorheological Damper

Journal of Intelligent Material Systems and Structures, 2008
This study presents an electromagnetic design methodology for the magnetorheological (MR) damper. To improve the performance of the MR damper, the magnetic field should be effectively supplied to the MR fluid. Therefore, it is important that the magnetic circuit composed with the MR fluid, the ferromagnetic yoke for forming the magnetic flux path, and ...
Yun-Joo Nam, Myeong-Kwan Park
openaire   +1 more source

Heating of Magnetorheological Fluid Dampers

Journal of Intelligent Material Systems and Structures, 1999
This paper presents experimental and theoretical studies on heat generation and dissipation of fieldcontrollable, magneto-rheological (MR) fluid shock absorbers. Since MR fluid dampers are energy-dissipating devices, the issues of heat generation and dissipation are important.
Faramarz Gordaninejad, Darrell G. Breese
openaire   +1 more source

Development of magnetorheological elastomers–based tuned mass damper for building protection from seismic events

Journal of Intelligent Material Systems and Structures, 2018
This study investigated and evaluated a semi-active tuned mass damper which incorporated four multi-layered structures fabricated using magnetorheological elastomers. The four magnetorheological elastomer structures formed a square and provided the tuned
Shuaishuai Sun, Haiping Du, Shiwu Zhang   +2 more
exaly   +1 more source

Skyhook Isolation with Magnetorheological Damper

2006 6th World Congress on Intelligent Control and Automation, 2006
Magnetorheological (MR) damper is a kind of semi-active device. Its damping can be controlled by input electrical currents. In this paper, a modified bi-viscous and hysteretic model is proposed to describe the bi-viscous and hysteretic behaviors of MR damper. The model parameters have direct physical significance to the MR damper properties.
null Shuqi Guo, null Buqing Xu, null Haijun Xing, null Cunzhi Pan   +3 more
openaire   +1 more source

Magnetorheological damper for vibration reduction in a robot arm

Intelligent Service Robotics, 2022
In this study, we develop a novel damper prototype for robot manipulators of a mobile robot to perform rescue operations in extreme environments like battlefields. Shock vibrations occur when such robots drive over rugged terrain, adversely affecting both the robot and the rescued person.
Yun, Dongwon, Park, Chanhun, Park, Dongil, Kim, Hwi-su   +3 more
openaire   +2 more sources

Analysis of magnetorheological fluid damper

Journal of Central South University of Technology, 2007
Magnetorheological fluids(MRF) are smart materials consisting of silicon oil and very small soft-magnetic particles. In a magnetic field, the viscosity and the flow behaviour of the fluid are considerably changed. MRF damper is a device to give damping by the shear stress of MR fluids.
Yan Yang, Hui Li, Bo-seon Kang
openaire   +1 more source

Design analysis of a magnetorheological damper

SPIE Proceedings, 2005
The design method of a cylindrical magnetorheological (MR) damper is established. The viscosity model is used to describe the viscous characteristics of the MR fluids subject to an applied magnetic field. The equation for the damping force is derived to provide the theoretical foundation for the design of the damper.
J. M. He, J. Huang, L. J. Fu
openaire   +1 more source

Investigations of a Magnetorheological Fluid Damper

IEEE Transactions on Magnetics, 2004
This paper presents the results of a study of a magnetorheological fluid (MRF) damper. The principle could be used for such applications as seismic protectors for civil structure (where the dimensions are chosen to handle the greatest forces) or shock absorbers for the automotive industry (where the dimensions are chosen to accommodate heating effects).
M. Lita, N.C. Popa, C. Velescu, L.N. Vekas   +3 more
openaire   +1 more source

Analysis and Design of Magnetorheological Damper

Advanced Materials Research, 2010
Magnetorheological (MR) dampers are the semi-active control devices that use MR fluids to produce controllable dampers. In this paper, the design method of the cylindrical MR damper is established. Bingham model is used to describe the constitutive behavior of MR fluids subject to an applied magnetic field. The equation for the damping force is derived
Jin Huang, Jian Min He, Guo Ping Lu
openaire   +1 more source

Magnetorheological dampers in shear mode

Smart Materials and Structures, 2007
In this study, three types of shear mode damper using magnetorheological (MR) fluids are theoretically analyzed: linear, rotary drum, and rotary disk dampers. The damping performance of these shear mode MR dampers is characterized in terms of the damping coefficient, which is the ratio of the equivalent viscous damping at field-on status to the damping
N M Wereley, J U Cho, Y T Choi, S B Choi
openaire   +1 more source