A Vibration Model of Ball Bearings with a Localized Defect Based on the Hertzian Contact Stress Distribution

Figure 11

Frequency spectra of the experimental signals and the numerical signals under different loads. Experimental signals: (a) 4.9 N, (b) 9.8 N, (c) 14.7 N, and (d) 19.6 N. Numerical signals: (e) 4.9 N, (f) 9.8 N, (g) 14.7 N, and (h) 19.6 N.