Maximum Contact Stresses of WN and Involute Gears.

This paper presents a study on the maximum contact stresses of WN (SymMarC and Haseg SymMarC) and involute gears. The contact stresses of WN and involute gear teeth with various dimensions were calculated under different applied loads. The relations between the applied load and maximum contact stress and the effects of center distance, helix angle, number of teeth and addendum modification on the contact stresses of WN and involute gear teeth were determined to a considerable extent. The maximum contact stresses of WN gears were found to be relatively larger than those of involute gear teeth for smaller applied load, but to become relatively smaller than the latter for larger applied load.