Publication detail
Design of a frictionless magnetorheological damper with a high dynamic force range
MACHÁČEK, O. KUBÍK, M. STRECKER, Z. ROUPEC, J. MAZŮREK, I.
English title
Design of a frictionless magnetorheological damper with a high dynamic force range
Type
journal article in Web of Science
Language
en
Original abstract
This article discusses an increase in dynamic force range in a spring-damper unit achieved by elimination of sealings´ friction. This friction is a part of damping force that cannot be controlled; therefore, it is undesirable in magnetorheological dampers. A new design of a magnetrheological damper with no friction force is descrbed and compared with a traditional magnetorheological damper consisting of a piston and piston rod seals. In the traditional design, fluid is forced to flow by a hydraulic cylinder with high friction caused by sealings. In order to eliminate this friction, a frictionless unit made of metal bellows was designed. Elastic metal bellows can be sealed only by static seals. The measurement of force-velocity dependency was carried out for the original and the new damper with the same magnetorheological valve. The results indicate that the frictionless unit exhibits a significant improvement in the dynamic force range. In the case of adaptive-passive damping control, the increase in the dynamic force range enables the improvement of vibration elimination in the entire frequency range.
English abstract
This article discusses an increase in dynamic force range in a spring-damper unit achieved by elimination of sealings´ friction. This friction is a part of damping force that cannot be controlled; therefore, it is undesirable in magnetorheological dampers. A new design of a magnetrheological damper with no friction force is descrbed and compared with a traditional magnetorheological damper consisting of a piston and piston rod seals. In the traditional design, fluid is forced to flow by a hydraulic cylinder with high friction caused by sealings. In order to eliminate this friction, a frictionless unit made of metal bellows was designed. Elastic metal bellows can be sealed only by static seals. The measurement of force-velocity dependency was carried out for the original and the new damper with the same magnetorheological valve. The results indicate that the frictionless unit exhibits a significant improvement in the dynamic force range. In the case of adaptive-passive damping control, the increase in the dynamic force range enables the improvement of vibration elimination in the entire frequency range.
Keywords in English
Magnetorheological damper, frictionless, dynamic force range, metal bellows, transfer ratio
Released
19.03.2019
Publisher
SAGE
ISSN
1687-8132
Volume
11
Number
3
Pages from–to
1–8
Pages count
8
BIBTEX
@article{BUT156410,
author="Ondřej {Macháček} and Michal {Kubík} and Zbyněk {Strecker} and Jakub {Roupec} and Ivan {Mazůrek},
title="Design of a frictionless magnetorheological damper with a high dynamic force range",
year="2019",
volume="11",
number="3",
month="March",
pages="1--8",
publisher="SAGE",
issn="1687-8132"
}