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Author: Subject: Magnetorheological Damper
elementcollector1
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[*] posted on 28-11-2014 at 16:29
Magnetorheological Damper


While doing research online, I came across this device - basically an automobile shock absorber that utilizes electromagnetic force and a magnetically responsive fluid (rather akin to ferrofluid, but apparently not quite the same).
What I'm wondering is, how exactly do these work?

All I can find is that there is a change in viscosity when the magnetic field, but how does this change absorb force or energy - is it simply that the thicker fluid absorbs more, or must it be continuously varied?

In addition, what kind of scale of force absorbed can these things do - no papers I've read say anything, so it could be anything from a few newtons to a few kilonewtons.




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IrC
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[*] posted on 28-11-2014 at 18:56


Seems to be quite a lot of information about them:

http://en.wikipedia.org/wiki/Magnetorheological_damper

http://en.wikipedia.org/wiki/Magnetorheological_fluid



Attachment: poynor.pdf (2.9MB)
This file has been downloaded 497 times image3.jpg - 73kB

If you read the fluid page I believe it answers your question.


[Edited on 11-29-2014 by IrC]




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