The main objective of this article is to study the influence of static and dynamic
behavior on the occurrence of contact fatigue on spur gear tooth. For this end, a dynamic
model of geared transmission in one degree of freedom, with Crossland crite
rion, are used.
The motion equation is analyzed step par step in the time in order to determine the
dynamic load in all contact points on teeth profile. In this way, the time-varying dynamic
loads on tooth flanks are determined and the subsurface stress components can be derived
from the classic Hertzian theory.
