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- W2038910571 abstract "The measured performances of axial groove and preloaded three-lobe journal bearings are compared with the predicted performance. Operating eccentricity and dynamic coecients were found for dierent shaft speeds and various steady loads. Numerical results are based on a Reynolds equation solver, which allows for a variety of thermal eects. Sinusoidal excitations were used to experimentally determine the eight linearized stiness and damping coecients. The rigid rotor stability threshold parameter, vs, and whirl ratio, vd, were found from the dynamic coecients. The experimental and theoretical stability threshold and whirl ratio are correlated as independent functions of both the Sommerfeld number and operating eccentricity. The predicted stability maps are slightly higher than measured, indicating that the predicted characteristics are more stable than measured. The predicted whirl ratios are in approximate agreement with measured values. As expected, the stability maps show the axial groove bearings to be less stable than the preloaded three-lobe bearings." @default.
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- W2038910571 date "2002-01-01" @default.
- W2038910571 modified "2023-10-18" @default.
- W2038910571 title "Experimental and Predicted Rigid Rotor Stability Threshold of Axial Groove and Three-Lobe Bearings" @default.
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- W2038910571 doi "https://doi.org/10.1155/s1023621x02000039" @default.
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