The Comparative Analysis of Crack Propagation in the Gear Tooth

The displacement and stress field in the vicinity of crack tip (see cross-section 1-1 of Figures 2 and 4), are determined by using the finite element method. Evaluated are the stress intensity factors. The problem of crack propagation is treated by the methods of extrapolation, energy consideration, the J-integral and strain energy density. The stress analysis is incorporated into the finite element program. Plasticity effects can also be handled.