Some problems on helical gear contact stress finite element alalysis modeling are studied in this paper

including forming tooth surface

determining engaging position by means of the minimum length of contact lines

establishing the engaging relation of a pair of gears using coordinate transformation and obtaining the displacement constraint conditions suitable to the contact problem finite element analysis by defining the constraint equations of rigid motion of nodes. A finite element analysis modeling program for calculating contact stress of helical gears which includes the internal or external engagement mode and gear wheel structure is developed. The ADINA nonlinear finite element analysis program is used to a solver. The finite element analysis results of seven samples are verfied through the gear calculation standards of ISO

AGMA411.02

AGMA2001.