... 2009 22 09 2009 machine bearings rotors shock absorbers turbomachinery vibration control vibrations viscoelasticity tilting pad gas bearing damper rotordynamics compliant pads Microturbomachinery (MTM) using oil-free bearings typically has power outputs less than 1 MW...

... of significant amplitudes over a wide speed range. However, the subsynchronous whirl motions generally reach a limit cycle enabling continuous operation. The paper advances progress on the validation against measurements of linear and nonlinear rotordynamic models for predicting shaft motions of automotive TCs...

...Bugra H. Ertas; John M. Vance The objective of the following work was to determine frequency-dependent rotordynamic force coefficients for a new annular gas damper seal design. Both rotating and nonrotating experimental tests are presented for inlet pressures at 1000 psig ( 69 bar ) , a frequency...

... turbomachinery. These characteristics are adequate load support, good stiffness and damping coefficients, low friction and wear during rotor startup and shutdown, and most importantly, enhanced rotordynamic stability at the operating speed. Hybrid (hydrostatic/hydrodynamic) flexure pivot-tilting pad bearings...