Abstract
Recently, aerodynamic bump foil bearings have attracted considerable attentions in oil-free turbo machines. However, the structure of bump foils is usually very complicated and it is difficult to fabricate these bump foils. This paper proposes a foil thrust bearing supported by visco-elastic material instead of bump foils. The structure of the proposed foil bearing is much simpler than that of a foil thrust bearing with bump foils. In this paper, the static characteristics of the proposed thrust foil bearing are numerically investigated and the experiment was conducted using manufactured test bearings. It was confirmed that the proposed foil thrust bearing could be easily manufactured and operate well as an aerodynamic thrust bearing.
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