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Rolling bearing life prediction-past, present, and future
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Miller, C. R. Zaretsky, E. V. Poplawski, J. V. |
| Copyright Year | 2000 |
| Description | Comparisons were made between the life prediction formulas of Lundberg and Palmgren, Ioannides and Harris, and Zaretsky and full-scale ball and roller bearing life data. The effect of Weibull slope on bearing life prediction was determined. Life factors are proposed to adjust the respective life formulas to the normalized statistical life distribution of each bearing type. The Lundberg-Palmgren method resulted in the most conservative life predictions compared to Ioannides and Harris, and Zaretsky methods which produced statistically similar results. Roller profile can have significant effects on bearing life prediction results. Roller edge loading can reduce life by as much as 98 percent. The resultant predicted life not only depends on the life equation used but on the Weibull slope assumed, the least variation occurring with the Zaretsky equation. The load-life exponent p of 10/3 used in the American National Standards Institute (ANSI)/American Bearing Manufacturers Association (ABMA)/International Organization for Standardization (ISO) standards is inconsistent with the majority roller bearings designed and used today. |
| File Size | 773723 |
| File Format | |
| Language | English |
| Publisher Date | 2000-11-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Service Life Fatigue Life Stress Analysis Statistical Analysis Edge Loading Ball Bearings Roller Bearings Statistical Distributions Performance Prediction Prediction Analysis Techniques Weibull Density Functions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
