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Posted By GeoffB4
Every book/text I look at starts with the term
m/s2 without explaining what that term stands for.
Can anybody point me to some basic text?
Thanks
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Posted By Rich Bannister m/s2 stands for metres per second squared. It's the unit of measurement for acceleration. The "Simple English" (no offence meant) version of Wikipedia gives a reasonably easy to understand explanation. http://simple.wikipedia.org/wiki/Acceleration
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Posted By Nick Patience
This is a measure of accelleration. It stands for metres per second per second (alternatively quoted as metres per second squared). It is a measure of the vibration magnitude. The physics of vibration are quite complex.
Hope this helps
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Posted By GeoffB4
Thanks guys, I'd lost the link between velocity and acceleration. I blame age and length of time since being at Uni.
And I should have thought of Wikipedia by myself.
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Posted By Rich Bannister
Without getting too technical, acceleration is not a measure of vibration magnitude.
It can be used to give an indication of the forces applied on the upper body though since:
Force = mass x acceleration
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Posted By Ron Hunter
Would anyone out there be able to explain the unit for Whole-Body Vibration: metres per second to the power 1.75?
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Posted By Rich Bannister You are talking about the Vibration Dose Value (VDV) There isn't really a simple explanation, just that it is a cumulative value (i.e. it increases with time). It is based on the 4th root-mean quad of the acceleration. In terms of units this is: -The acceleration to the power 4 (m4/s8) -Multiplied by the time (s), giving (m4/s7) -All to the quad root, giving (m/s1.75) The following link is quite a good read: http://www.humanvibratio...g%20English%20070606.pdf
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