UK Karting - Notice Board (General Karting) : Re: 50 kgs

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Re: 50 kgs
Posted by 'davidmc' on 03 Jan 2011 @ 16:34

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davidmcJoined: April 2003
Total Posts: 2
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An axle is only statically loaded when stationary. When in motion it is in a continuous cycle of compression to tension. Imagine a single point on the loaded side of the axle (where flex is occuring). When that point is nearest to the ground it is at maximum tension; 90 degrees either side of this and it is at zero tension/compression; another 90 degrees (furthest from the ground) and it is at maximum tension.

You can see that this motion is analagous to a mass spring damper system: http://en.wikipedia.org/wiki/Damping

It is clear that an axle made of steel will have, to all reasonable degrees of accuracy, the same Young's modolus and will therefore flex the same amount for a given load. However, go back to the Mass/Spring/Damper system and imagine that the stiffness of the axle is referring to it's damping coefficient. Now imagine that it is damped well enough such that the axle never has the required time to reach maximum deflection and you'll see that, to all intents and purposes (and in the context most people assume) you've altered it's flex.

Of course, even if the various axle stiffnesses always do reach maximum deflection for a given load, the time taken to get there is surely going to have an affect.

Message Thread:

Axles Hard, Medium, Soft by 'philharrison' (01 Jan 2011 @ 20:45)

Re: Axles Hard, Medium, Soft by 'Traxtar' (01 Jan 2011 @ 20:58)

Re: Axles Hard, Medium, Soft by 'AlfieMoon' (01 Jan 2011 @ 21:47)

Re: Axles Hard, Medium, Soft by 'Traxtar' (01 Jan 2011 @ 22:05)

Alfie Moon or should it be Alanrr by 'Traxtar' (02 Jan 2011 @ 13:21)

Re: Alfie Moon or should it be Alanrr by 'Newshound' (02 Jan 2011 @ 13:27)

Re: Axles Hard, Medium, Soft by 'philharrison' (01 Jan 2011 @ 22:10)

Re: Axles Hard, Medium, Soft by 'Ditch' (01 Jan 2011 @ 22:55)

Length over Stiffness & Soft... by 'ScoobyScene' (02 Jan 2011 @ 8:14)

Soft axles by 'RSBW' (02 Jan 2011 @ 8:31)

Re: Soft axles by 'Ballhatchet' (02 Jan 2011 @ 10:57)

Re: Soft axles by 'Newshound' (02 Jan 2011 @ 11:10)

Re: Soft axles by 'Ballhatchet' (02 Jan 2011 @ 11:25)

Why do we always have chesnuts for Xmas? by 'alanrr' (02 Jan 2011 @ 13:59)

James, you and your Dad have lost it mate. by 'alanrr' (02 Jan 2011 @ 14:40)

Re: James, you and your Dad have lost it mate. by 'Traxtar' (02 Jan 2011 @ 15:10)

Re: James, you and your Dad have lost it mate. by 'KevinW' (02 Jan 2011 @ 15:35)

Feel your way by 'RoadRat' (02 Jan 2011 @ 16:04)

Re: James, you and your Dad have lost it mate. by 'alanrr' (02 Jan 2011 @ 22:33)

All the proof you need right here by 'michaelg36' (03 Jan 2011 @ 2:06)

Re: All the proof you need right here by 'alanrr' (03 Jan 2011 @ 13:55)

Re:axles tested Very interseting results by 'philharrison' (02 Jan 2011 @ 19:06)

Re:axles tested Very interseting results by 'Aquila' (02 Jan 2011 @ 19:27)

Re:axles tested Very interseting results by 'QuickOldTimer' (02 Jan 2011 @ 19:46)

Re:axles tested Very interseting results by 'Aquila' (02 Jan 2011 @ 19:55)

Re:axles tested Very interseting results by 'KevinW' (02 Jan 2011 @ 20:17)

Re:axles tested Very interseting results by 'philharrison' (02 Jan 2011 @ 20:20)

flexing by 'sdminus' (02 Jan 2011 @ 20:43)

50 kgs by 'RSBW' (03 Jan 2011 @ 5:12)

Re: 50 kgs by 'davidmc' << You are here!

Re: 50 kgs by 'davidmc' (03 Jan 2011 @ 19:33)

Even odder, If you have two chassis....... by 'alanrr' (04 Jan 2011 @ 17:36)

Re:axles tested Very interseting results by 'PaulGarnerTKM' (03 Jan 2011 @ 18:37)

Re:axles tested Very interseting results by 'PaulGarnerTKM' (03 Jan 2011 @ 18:57)

Re:axles tested Very interseting results by 'QuickOldTimer' (03 Jan 2011 @ 19:56)

Re:axles tested Very interseting results by 'Ballhatchet' (03 Jan 2011 @ 22:15)

Re:axles tested Very interesting results by 'philharrison' (03 Jan 2011 @ 22:37)

for what its worth....... by 'Aquila' (03 Jan 2011 @ 23:14)

Re: for what its worth....... by 'PaulGarnerTKM' (04 Jan 2011 @ 12:54)

Re: for what its worth....... by 'QuickOldTimer' (04 Jan 2011 @ 14:06)

Re: for what its worth....... by 'Ballhatchet' (04 Jan 2011 @ 16:13)

Re: for what its worth....... by 'drewdt3' (04 Jan 2011 @ 16:21)

QOT by 'PaulGarnerTKM' (04 Jan 2011 @ 16:47)

Re: QOT by 'Traxtar' (05 Jan 2011 @ 0:26)

Re: QOT by 'Ballhatchet' (05 Jan 2011 @ 9:19)

Re: QOT by 'PaulGarnerTKM' (05 Jan 2011 @ 9:38)

Re:axles tested Very interseting results by 'NJB' (04 Jan 2011 @ 17:05)

Re:axles tested Very interseting results by 'KevinW' (04 Jan 2011 @ 17:59)

Re:axles tested Very interseting results by 'degs' (06 Jan 2011 @ 20:40)

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