Further fatigue analysis is carried out. Six lobe positions
are applied with plunger loads and stresses are calculated.
Fatigue SN curve data is applied to the Ansys
Fatigue module and stresses are captured for all the six
load cases. The stresses are varying between 330 N/mm2
to 427 N/mm2 with contact loads and rotational loads.
The resulting stresses are tabulated and fatigue life estimation
is carried out for camshaft. The results shows
an alternating fluctuating stresses of 159 N/mm2 Which
is more than alternating stresses of 86.2 N/mm2from the
SN curve data for 1 million cycles which results in lesser
safety of the camshaft for given fatigue loads and cumulative
usage factor indicating the value of ‘0.6’ suggesting
better material or increased supports.