Dynamic Behavior of an Unbalanced Rotor on Lubricated Bearings |
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Authors: | E. De Rosa C. Rossi |
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Affiliation: | Università degli Studi di Napoli—Federico II, Dipartimento di Ingegneria Meccanica per l'Energetica , Via Claudio, Napoli, 80125, Italy |
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Abstract: | In this paper the dynamic behavior of an unbalanced rotor on journal bearings is experimentally investigated. The static unbalance values are obtained by two adjustable rings. Tests are performed for a variety of lubricant flow rates, static unbalance values, ratios of bearing length-to-diameter and lubricant viscosities. The results of this study show that, from a qualitative point of view, there is good agreement with the theoretical predictions made by Lund and Nielsen, in particular for a bearing with an L/D = 1. However, it is shown that the oil flow rate greatly affects the dynamic behavior; this aspect is not adequately considered in previous theoretical investigations. |
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Keywords: | Journal Bearings Hydrodynamic Lubrication |
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