TY - JOUR A2 - Khonsari, M. M. AU - Stolarski, Tadeusz Adam PY - 2011 DA - 2011/04/05 TI - Running Characteristics of Aerodynamic Bearing with Self-Lifting Capability at Low Rotational Speed SP - 973740 VL - 2011 AB - An aerodynamic journal bearing that is capable of self-generating squeeze-film pressure is presented and its dynamic characteristics investigated numerically and experimentally. A numerical method based on a time-marching static model was applied to assess the orbit trajectory path of the rotor upon a perturbation. Experimental results were obtained to validate the effect of the self-generated squeeze-film pressure on the stability of the rotor. Analyzing the Fast Fourier Transform (FFT) responses of the rotor orbits enabled identification of self-excited whirling instabilities. Both numerical and experimental results showed that increasing the squeeze-film effect of the bearing could raise the threshold speed of instability. SN - 1687-5915 UR - https://doi.org/10.1155/2011/973740 DO - 10.1155/2011/973740 JF - Advances in Tribology PB - Hindawi Publishing Corporation KW - ER -