Abstract
In this paper, the elastohydrodynamic (EHD) simulation by AVL EXCITE is performed to analyze the lubrication performance including oil film thickness, oil film pressure, asperity contact pressure, and friction power losses. The journal bearing fatigue experiments were conducted on the fatigue test rig (Glacier Vandervel, made in the UK). The shell temperature was measured in real-time and the fatigue limit was finally determined. The simulation results combined with experimental results were discussed to comprehensively explain the failure mechanisms. It can be found that as the lubrication condition degrades, the asperity contact aggravates, and the shell temperature is increased sharply. This causes bearing performance degradation, poor bearing load carrying capacity, and severe surface damage, which finally lead to bearing failure.
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