Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties

Mario F. Letelier, Jean Paul Rouliez, Dennis A. Siginer, Omar F. Corral

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The fluid dynamics of dampers is investigated for the case where the damping fluid flows through passages in which a magnetic field is applied. This is a specific case of a new and promising field of applications that has emerged through the design of devices that take advantage of some properties of the so-called electrorheological fluids and magnetorheological fluids (ERF and MRF). These fluids are created when a base fluid is seed with very small dielectric or iron particles, so that it reacts to electric or magnetic fields by developing some non-Newtonian characteristics, most prominently a yield stress, viscosity change, and also viscoelasticity. These fluid properties can be controlled through control of the electric or magnetic fields' strength. In this paper, a typical damping load is modeled and related to the required flow of a MRF inside the damper. To this end the fluid is modeled as a Bingham fluid with time-varying yield-stress. The analysis here developed makes it possible to determine the magnetic field variation necessary in order to achieve a specific displacement of the damper's piston. The flow equations are analytically solved for any time-history of the dimensionless fluid's yield-stress. Main results are some simplified relationships that correlate damping load and magnetic field time-variations. These results aim at providing analytical tools that may facilitate dampers' design.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Pages913-918
Number of pages6
Volume261 FED
DOIs
Publication statusPublished - Dec 1 2005
Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
Duration: Nov 5 2005Nov 11 2005

Other

Other2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
CountryUnited States
CityOrlando, FL
Period11/5/0511/11/05

Fingerprint

Hydrodynamics
Fluids
Magnetic fields
Yield stress
Damping
Electric fields
Magnetorheological fluids
Electrorheological fluids
Viscoelasticity
Fluid dynamics
Pistons
Seed
Flow of fluids
Viscosity
Iron

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Letelier, M. F., Rouliez, J. P., Siginer, D. A., & Corral, O. F. (2005). Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties. In American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED (Vol. 261 FED, pp. 913-918) https://doi.org/10.1115/IMECE2005-81172
Letelier, Mario F. ; Rouliez, Jean Paul ; Siginer, Dennis A. ; Corral, Omar F. / Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties. American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 261 FED 2005. pp. 913-918
@inproceedings{543d8c3111e44d79a4f7ea9fabd44ece,
title = "Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties",
abstract = "The fluid dynamics of dampers is investigated for the case where the damping fluid flows through passages in which a magnetic field is applied. This is a specific case of a new and promising field of applications that has emerged through the design of devices that take advantage of some properties of the so-called electrorheological fluids and magnetorheological fluids (ERF and MRF). These fluids are created when a base fluid is seed with very small dielectric or iron particles, so that it reacts to electric or magnetic fields by developing some non-Newtonian characteristics, most prominently a yield stress, viscosity change, and also viscoelasticity. These fluid properties can be controlled through control of the electric or magnetic fields' strength. In this paper, a typical damping load is modeled and related to the required flow of a MRF inside the damper. To this end the fluid is modeled as a Bingham fluid with time-varying yield-stress. The analysis here developed makes it possible to determine the magnetic field variation necessary in order to achieve a specific displacement of the damper's piston. The flow equations are analytically solved for any time-history of the dimensionless fluid's yield-stress. Main results are some simplified relationships that correlate damping load and magnetic field time-variations. These results aim at providing analytical tools that may facilitate dampers' design.",
author = "Letelier, {Mario F.} and Rouliez, {Jean Paul} and Siginer, {Dennis A.} and Corral, {Omar F.}",
year = "2005",
month = "12",
day = "1",
doi = "10.1115/IMECE2005-81172",
language = "English",
isbn = "0791842193",
volume = "261 FED",
pages = "913--918",
booktitle = "American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED",

}

Letelier, MF, Rouliez, JP, Siginer, DA & Corral, OF 2005, Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties. in American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. vol. 261 FED, pp. 913-918, 2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005, Orlando, FL, United States, 11/5/05. https://doi.org/10.1115/IMECE2005-81172

Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties. / Letelier, Mario F.; Rouliez, Jean Paul; Siginer, Dennis A.; Corral, Omar F.

American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 261 FED 2005. p. 913-918.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties

AU - Letelier, Mario F.

AU - Rouliez, Jean Paul

AU - Siginer, Dennis A.

AU - Corral, Omar F.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The fluid dynamics of dampers is investigated for the case where the damping fluid flows through passages in which a magnetic field is applied. This is a specific case of a new and promising field of applications that has emerged through the design of devices that take advantage of some properties of the so-called electrorheological fluids and magnetorheological fluids (ERF and MRF). These fluids are created when a base fluid is seed with very small dielectric or iron particles, so that it reacts to electric or magnetic fields by developing some non-Newtonian characteristics, most prominently a yield stress, viscosity change, and also viscoelasticity. These fluid properties can be controlled through control of the electric or magnetic fields' strength. In this paper, a typical damping load is modeled and related to the required flow of a MRF inside the damper. To this end the fluid is modeled as a Bingham fluid with time-varying yield-stress. The analysis here developed makes it possible to determine the magnetic field variation necessary in order to achieve a specific displacement of the damper's piston. The flow equations are analytically solved for any time-history of the dimensionless fluid's yield-stress. Main results are some simplified relationships that correlate damping load and magnetic field time-variations. These results aim at providing analytical tools that may facilitate dampers' design.

AB - The fluid dynamics of dampers is investigated for the case where the damping fluid flows through passages in which a magnetic field is applied. This is a specific case of a new and promising field of applications that has emerged through the design of devices that take advantage of some properties of the so-called electrorheological fluids and magnetorheological fluids (ERF and MRF). These fluids are created when a base fluid is seed with very small dielectric or iron particles, so that it reacts to electric or magnetic fields by developing some non-Newtonian characteristics, most prominently a yield stress, viscosity change, and also viscoelasticity. These fluid properties can be controlled through control of the electric or magnetic fields' strength. In this paper, a typical damping load is modeled and related to the required flow of a MRF inside the damper. To this end the fluid is modeled as a Bingham fluid with time-varying yield-stress. The analysis here developed makes it possible to determine the magnetic field variation necessary in order to achieve a specific displacement of the damper's piston. The flow equations are analytically solved for any time-history of the dimensionless fluid's yield-stress. Main results are some simplified relationships that correlate damping load and magnetic field time-variations. These results aim at providing analytical tools that may facilitate dampers' design.

UR - http://www.scopus.com/inward/record.url?scp=33645960091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645960091&partnerID=8YFLogxK

U2 - 10.1115/IMECE2005-81172

DO - 10.1115/IMECE2005-81172

M3 - Conference contribution

AN - SCOPUS:33645960091

SN - 0791842193

SN - 9780791842195

VL - 261 FED

SP - 913

EP - 918

BT - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

ER -

Letelier MF, Rouliez JP, Siginer DA, Corral OF. Mathematical modelling of magneto-hydrodynamic dampers with time-varying fluid properties. In American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 261 FED. 2005. p. 913-918 https://doi.org/10.1115/IMECE2005-81172