Stress State at the Bucket of
a Tractor


To better understand the stress state for a new tractor, a structural
analysis computer program was used to determine stresses
in the tractor's frontend bucket. For the location shown, it was determined
that the stresses are σ_{x} = 30
psi, σ_{y} =
10 psi, and τ_{xy} = 20 psi.


Using Mohr's circle, what is 1) the principal direction and principal normal
stresses, 2) maximum shear direction and the maximum shearing stress, and 3)
the stresses at an angle of 15^{o}?
