On drawbar pull of tracked oversnow vehicle

Abstract

To predict drawbar pull property of flexible tractor on snow covered terrain for fresh or newly fallen fresh snow and sintered snow in low temperature -13°C, some energy equilibrium equation of track motion for various snow depths has been analysed. It has been cleared that the drawbar pull decreases gradually with slippage of tractor and gets a peak value at no slip ratio, and the drawbar pull D.B.P. can be calculated approximately by effective maximum traction force of track belt T drove from engine power, track width B and deformation energy loss per unit area E_n of snow terrain under track belt due to compaction as
D.B.P.=T-2BE_n.
And to predict the drawbar pull from field measurements, some circular plate penetration test and vane cone shear test results are cleared to be usefull.