Tolerance effect on performance of externally pressurized air journal bearings
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摘要: 建立了一種考慮影響氣膜厚度誤差、圓度和圓柱度誤差的氣膜厚度分布綜合表達式,考慮加工誤差對氣體靜壓徑向軸承的影響,進行了氣體潤滑有限元分析.分析表明:圓度和圓柱度誤差對軸承的承載能力影響不大:氣膜厚度誤差為平均氣膜厚度的5%時,承載能力變化約為10%.Abstract: The paper proposed a gas film thickness distribution formula involved gas film thickness error, round and cylindrical errors. The effect of tolerance on the performance of an externally pressurized air journal bearing was studied by the finite element method. It is shown that round and cylindrical errors have less effect on the load-carrying capacity of the bearing, and an average film thickness error of 5% may result in a load-carrying change of 10%.
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Key words:
- externally pressurized air bearing /
- unsymmetry /
- finite element method
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