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Secondary Causes of Waviness

  • Ralph A. Burton

Abstract

Primary surface waves are present at the beginning of start-up and are caused by fabrication or assembly errors. Secondary waves are caused by: (1) nonlinear heating when the journal is eccentric in the bearing; (2) departure from cylindrical symmetry in the housing, which can cause waviness even when heat flux is uniform into the bore; and (3) mechanical constraints, which distort the bearing as it attempts to expand. None of these cause remarkable effects during start-up, but when the system is allowed to equilibrate with a strong thermal gradient in the bearing, the second and third types of waves will grow and can trigger a long delayed seizure.

Keywords

Heat Flux Surface Wave Wave Component Radial Expansion Uniform Heat Flux 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Ralph A. Burton
    • 1
  1. 1.Burton TechnologiesRaleighUSA

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