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Article: New tribology study results reported from National Aeronautics and Space Administration.
- Article from:
- Defense & Aerospace Week
- Article date:
- May 27, 2009
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"The effect of hoop stresses in reducing cylindrical roller bearing fatigue life was determined for various classes of inner-ring interference fit. Calculations were performed for up to seven fit classes for each of the 10 bearing sizes," researchers in the United States report.
"The hoop stresses were superimposed on the Hertzian principal stresses created by the applied radial load to calculate roller bearing fatigue life. A method was developed through a series of equations to calculate the life reduction for cylindrical roller bearings. All calculated lives are for zero initial internal clearance. Any reduction in bearing clearance due to interference fit ...