Patent ID: 9109622
Filing Date: 2015-08-18
Classification: F16C,Y10T

Abstract:
1. A rotor support structure for controlling non-synchronous vibrations of rotating machinery, the rotor support structure comprising: a foil bearing adapted to be disposed around a journal of a rotating rotor shaft, the foil bearing comprising: a bearing housing disposed around the foil bearing, wherein the foil bearing is configured to be anisotropic, exhibiting a stiffness in a first support direction that varies in magnitude from that in a second support direction that is substantially orthogonal to the first support direction, at least one foil of the at least two foils has a foil thickness, a foil height, a foil pitch, a foil pitch ratio, or combinations thereof in the first support direction that is different from that in the second support direction, wherein the at least one foil comprises the bump foil, the series of bumps in the first support direction are configured with the foil thickness, the foil height, the foil pitch, the foil pitch ratio, or combinations thereof that are different than the series of bumps in the second support direction, wherein the at least one intermediate foil comprises a wavy shim having a series of waves, each wave having a cross-sectional shape, a wave height, and a wave pitch.