This paper presents a finite element (FE) modelling technique to evaluate t
he mesh compliance of spur gears. Contact between the engaging teeth is sim
ulated through the use of gap elements. Analysis is performed on several ge
ar combinations and the variation in tooth compliance along the contact loc
ation is presented in a non-dimensional form. Results are compared with ear
lier predictions based on analytical, numerical and experimental methods. L
oad sharing among the mating gear teeth is discussed, and the overall gear
mesh stiffness together with its cyclic variation along the path of contact
is evaluated.