![]() ![]() This study set out to predict the load capacity and rotordynamic coefficients of tilting-pad journal bearings, taking the pivot stiffness into account. In general, the current predictive model including the pivot stiffness improves the accuracy of the rotordynamic performance predictions when compared to the previously published predictions. The prediction underestimates the test data slightly. The predicted damping coefficients increase as the static load increases and the rotor speed decreases. They agree excellently with test data from open literature. The predicted stiffness coefficients increase as the static load and the rotor speed increase. The predicted pressure profile shows the significant pressure development even on the unloaded pads along the direction opposite to the loading direction. Due to the compliance of the pivot, the predicted journal eccentricity agree well with the measured journal center trajectory for increasing static loads, while the early prediction without pivot model consideration underestimates it largely. The present TPJB model considers the pivot stiffness calculated based on the Hertzian contact stress theory. This paper predicts the rotordynamic force coefficients of tilting pad journal bearings (TPJBs) with ball-socket pivot and compares the predictions to the published test data obtained under load-between-pad (LBP) configuration. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |