Dynamic Whirl in Well-Aligned, Liquid-Lubricated End-Face Seals with Hydrostatic Tilt Instability

摘要: Dynamic whirl in well-aligned, fully liquid-lubricated end-face seals is analyzed and tested. As with of journal bearings, seal occurs under lightly loaded conditions, this case controlled by balance ratio. The two common arrangements are analyzed, including effects the elastomer secondary sealing elements. Whirling found to be induced hydrostatic tilt instability hydrodynamically. Elastomer tend suppress whirl, while seal-ring inertia generally insignificant. Test results support analysis give insight into relative magnitudes liquid film moments variations pressure, shaft speed amplitude. Presented as an American Society Lubrication Engineers paper at ASME/ASLE Conference San Francisco, California, August 18–21, 1980.