Fatigue cracking of bearing and failure of railway axles - Integrity of ...
Fatigue cracking of bearing and failure of railway axles - Integrity of ...
Fatigue cracking of bearing and failure of railway axles - Integrity of ...
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Maksimum value <strong>of</strong> SIF K IIAmax at point A.<br />
M×τ × π×a<br />
2 max<br />
K =<br />
IIAmax<br />
Φ<br />
[ ] 1/2<br />
1.64<br />
Φ= 1+1.464(a/c)<br />
τ =σ +σ<br />
kr<br />
max r xy<br />
Calculation <strong>of</strong> SIF in point A<br />
M2 [N/mm2 ]<br />
[N/mm<br />
- coeficient <strong>of</strong> geometry<br />
2 ] -maximum shear stress in inner ring<br />
a[mm] -crack depth<br />
c[mm] -hal <strong>of</strong> crack length on surface<br />
σ kr<br />
r [N/mm2 ] -radial stress <strong>of</strong> press fit<br />
σxy [N/mm2 τ max<br />
] -shear stress caused by loading <strong>of</strong> <strong>bearing</strong>
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