THE PROBABILITY OF INTERMITTENT CONTACT OF EXTERNALLY PRESSURIZED GAS BEARINGS EXCITED BY STOCHASTICALLY DEFINED FORCING OF THE BEARING SUPPORTS

Abstract

Gas bearings, lacking protective boundary films, will be more susceptible (than oil bearings) to damage occasioned by the randomly extreme loadings which vehicles (ships, missiles, aircraft, ground vehicles) encounter in field operations. Since the loadings which a vehicle will sustain during its service life can only be defined in a probabilistic manner the eccentricity of the bearing journal must necessarily be stated in probabilistic language. The analytics necessary to express the reliability of gas bearings in terms of the probability of damage due to the random vibration of bearing supports encountered in a service environment are described. The case of a flexible rotor supported on externally pressurized gas bearings is specifically referred to. Both the linear and non-linear bearing stiffness examples are investigated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0282809

Entities

People

  • Joseph Modrey

Organizations

  • Union College

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Bearings
  • Boundaries
  • Eccentricity
  • Environment
  • Gas Bearings
  • Ground Vehicles
  • Language
  • Probability
  • Random Vibration
  • Reliability
  • Stiffness
  • Vehicles
  • Vibration

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Statistical inference.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).