초록 ▼

A hydrodynamic fluid film bearing including a stationary retaining member 15, a rotating member 20 and a foil element 25 therebetween includes a resilient backing member 45 adjacent the foil element. The resilient backing member has a bilinear spring constant associated therewith. At low bearing loa

A hydrodynamic fluid film bearing including a stationary retaining member 15, a rotating member 20 and a foil element 25 therebetween includes a resilient backing member 45 adjacent the foil element. The resilient backing member has a bilinear spring constant associated therewith. At low bearing loading, the spring constant of the backing member is lower than at high loading. By this construction the bearing achieves enhanced damping with minimum power loss at all speeds of operation as well as improved load capacity, and resistance to rotating member excursions and instabilities due to shaft imbalances and other disturbances.

대표청구항 ▼

A hydrodynamic fluid film bearing comprising a stationary retaining member, a rotating member defining with said retaining member a spacing therebetween, a smooth foil element disposed within said spacing, said rotating member being supported on a pressurized fluid film layer maintained by the relat

A hydrodynamic fluid film bearing comprising a stationary retaining member, a rotating member defining with said retaining member a spacing therebetween, a smooth foil element disposed within said spacing, said rotating member being supported on a pressurized fluid film layer maintained by the relative movement between said rotating member and said foil element, said fluid bearing further comprising a single resilient backing member accommodating deflections of said foil elements due to the pressurization thereof by said fluid film layer, said bearing being characterized by: said single resilient backing member being of one piece unitary structure and having a bilinear spring rate including a first, lower spring rate for accommodating deflections of said foil element and excursions of said rotating member from lesser relative loading thereof for enhanced stability and damping, and minimal power loss and a second, higher spring rate for resisting deflections of said foil element and excursions of said rotating member from greater relative loading thereof for enhanced load capacity.