Vibrations in spring-supported bearing pads due to non-contacting roughnesses

✍ Scribed by Kristian Tønder

• Book ID: 104266347
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 124 KB
• Volume: 232
• Category: Article
• ISSN: 0043-1648
• DOI: 10.1016/s0043-1648(99)00154-4

✦ Synopsis

The paper addresses vibration phenomena associated with the changes in the combined roughness distribution that may occur when there is roughness present on both surfaces of a bearing. The study is performed by solving a modified Reynolds equation expressing roughness effects. The load may thus be generated numerically in terms of surface roughness parameters. It is demonstrated that the load carrying capacity may change considerably under these circumstances. This is shown to have a considerable influence on the net film thickness and may create film thickness fluctuations, particularly for transversely oriented roughness. It is concluded that the matter of surface roughness may be important if a very steady motion is required, particularly in the case of very thin films. It is also shown that the effect sometimes may be beneficial due to a resulting gain in mean film thickness.