A FEMs Magnetic-Thermal Study for a MR Automotive Damper

In recent years, the automotive industry has come closer and closer to the production of magnetorheological fluid (MR) dampers as they are quite simple to design and require little maintenance. Being powered by stationary electric current I, they develop stationary B associated with thermal loads wh...

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Bibliographic Details
Published inProgress in Electromagnetics Research Symposium pp. 2653 - 2660
Main Authors Versaci, M., Angiulli, G.
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.11.2021
Subjects
Fluids
Magnetomechanical effects
Magnetostatics
Production
Shock absorbers
Strips
Thermal analysis
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Summary:In recent years, the automotive industry has come closer and closer to the production of magnetorheological fluid (MR) dampers as they are quite simple to design and require little maintenance. Being powered by stationary electric current I, they develop stationary B associated with thermal loads which are also stationary and constant yield stress. Hence, in this work, an asymmetric MR damper was investigated using FEM analysis by performing a magnetostatic analysis of the MR fluid strip (Lord MRF-132AD fluid) present in the device. Furthermore, since the damper is subject to heating, a thermostatic analysis was also carried out at different external temperatures to simulate the different environmental conditions in which the damper operates. Both analyzes highlighted the parts of the damper most subject to both magnetic and thermal stress, highlighting the influence of temperature both on the magnetization of the particles and, globally, on the MR fluid.
ISSN:1559-9450
DOI:10.1109/PIERS53385.2021.9694906