Fig.3 Curves of the change of equivalent strain with cycles (a) SP;(b) DP
Under SP and DP, the changed trend of equivalent strain before and after 300 cycles is quite different (Fig.3). Fig. 4 is a histogram of the equivalent strain of 35CrMoA steel with different contact stresses under SP and DP at the 10th, 100th, 200th, and 300th cycles.