Nonlinear Dynamic Response of Compliant Journal Bearings
1 The Royal Institute of Technology, Department of Machine Design, 100 44 Stockholm, Sweden
2 Ghent University, Department of Mechanical Construction and Production, 9000 Ghent Belgium
This paper investigates the dynamic response of the compliant tilting pad journal bearings subjected to synchronous excitation. Bearing compliance is affected by the properties of pad liner and pad support geometry. Different unbalance eccentricities are considered. It is shown that bearing dynamic response is non-linear. Journal orbit complexity increases with pad compliance though the orbit amplitudes are marginally affected at low loads. At high loads, the journal is forced to operate outside the bearing clearance. The polymer liner reduces the maximum oil film pressure by a factor of 2 when compared to the white metal liner. The nonlinear dynamic response of compliant tilting pad journal bearings is thoroughly discussed.
© Owned by the authors, published by EDP Sciences, 2012