Abstract:
The study is established
based on contact area determination of
tractor wheel. The significance of contact
area in domain of wheel-soil interactions is
considerable. Requirement for contact area
estimations has prompted the researchers to
determine numerous theoretical models. In
this study, an experimental test was
conducted inside a soil bin facility providing
entirely reliable and controlled condition for
the test. The soil bin included a carriage, a
single wheel-tester and a frame. The utilized
tire was a towed Good year 9.5L-14, 6
radial ply agricultural tractor tire which is
used in John Deere tractors This test has the
advantage of utilizing images taken of the
contact areas and subsequently, using a
plantimeter to obtain the values of contact
area precisely. Test variables were the two
most prominent and influential parameters
i.e. tire inflation pressure in three levels (i.e.
100, 150, and 290 kPa) and vertical load
applied on wheel in three levels (i.e. 1962,
2943, and 3924 N). The acquired results
revealed that there is an increase in contact
area induced by increase of vertical load and
decrease of contact pressure. Contact area is
shown to be highly influenced by vertical
load in reduced tire inflation pressures.
