Insight into the response time of fail-safe magnetorheological damper

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU137502" target="_blank" >RIV/00216305:26210/20:PU137502 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-665X/abc26f" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-665X/abc26f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-665X/abc26f" target="_blank" >10.1088/1361-665X/abc26f</a>

Result language

angličtina

Original language name

Insight into the response time of fail-safe magnetorheological damper

Original language description

The significant problem of magnetorheological (MR) dampers is their poor fail-safe ability. In the case of power supply failure, the damper remains in a low damping state which is dangerous for several technical applications. This can be solved by accommodating a permanent magnet to the magnetic circuit of the damper. Currently, the MR dampers are used in progressive semiactive (S/A) control of suspension systems. The dynamics (force response time) of the damper is an important parameter that affects the performance of semiactive control. The main goal of this paper is to introduce the dynamic behavior of MR damper with a permanent magnet. The damper design with the permanent magnet in the magnetic circuit, transient magnetic simulation including magnetic hysteresis and eddy currents, and experiments are presented. The magnetic field response time and MR damper force response time are measured and also determined from magnetic simulation. The permanent magnet significantly influences the MR damper dynamics. The decrease of the damping force from a fail-safe state – medium damping to off-state – low damping is significantly faster (2 ms, -1A) than the increase to on-state – high damping (12 ms, 1A). The exact value is depending on the electric current magnitude and piston velocity. The damper achieved fail-safe damping force approximately 1/3 of the maximum damping force. The exact value of the fail-safe force is magnetization history-dependent. The maximum dynamic force range is 8.5 which is comparable with the common design of MR damper.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GJ20-23261Y" target="_blank" >GJ20-23261Y: Study of the magnetorheological fluid response time</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Smart Materials and Structures

ISSN

0964-1726

e-ISSN

1361-665X

Volume of the periodical

1

Issue of the periodical within the volume

30

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000597431300001

EID of the result in the Scopus database

2-s2.0-85098716443