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Formula track steering-turning

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Mechnique

Mechanical
Jun 22, 2003
1
Hi,

Need a formula for steering/turning on a tracked vehicle (Bulldozer) i.e. it is ratio with the length, width and tractive effort plus landed and unlanded mass
 
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tough one, it will be heavily related to weight distribution and the surface you are on as turning a tracked vehicle requires slippage. as a side note I have seen dozers with independent control of either track spin in place.

a good estimation assuming that neither track is moving backwards (this still might model that case, but im not sure of it):
let one tracks speed be v1 and the other v2 let W be the width from center of track to center of track let R be the turn radius.
(v1+v2)*W/(2*deltaV)=R

as for force required it would increase as the tracks got longer because the greater motion and the greater area but I doubt deriving the basic integral would give a number that is meaningful.
 
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