... contact microcracks normal distribution rolling bearings Weibull distribution damage mechanics Voronoi finite element method rolling contact fatigue numerical simulation material microstructure Ball and rolling element bearings commonly referred to as bearings are frequently used...

... 15 07 2009 24 09 2009 ball bearings failure analysis fatigue mechanical contact rolling rolling bearings rolling contact fatigue bearing life empirical models material microstructure Ball and roller bearings commonly referred to as bearings are frequently used...

... to variability in the life. This variation occurs because of the random shape and size of grains in the material microstructure. Assuming the exponents q and r are the same as the exponents in the original Lundberg–Palmgren theory ( 27 ). Thus, 16 r = 2.33 ,     q = 10.33...