考虑气膜厚度的矩形孔补偿空气轴承的稳定性

Penghai Zhang
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引用次数: 0

摘要

建立了矩形孔补偿空气轴承的理论模型,以研究其稳定性、刚度和空气消耗量(考虑到气膜厚度)。研究结果表明,为避免气锤,建议袋容积比小于 0.03。当轴承具有高刚度时,稳定性好,空气消耗量小。严格控制结构变形至关重要,因为它会严重影响稳定性。增加喷嘴数量可以提高稳定性,避免气流窒息。研究结果对孔口补偿空气轴承的设计具有重要意义。
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Stability of orifice-compensated air bearing with rectangular shape considering air film thickness
A theoretical model of the orifice-compensated air bearing with rectangular shape is built to study the stability, the stiffness and the air consumption considering the air film thickness. The study shows that, the pocket volume ratio of less than 0.03 is recommended to avoid the pneumatic hammer. The stability is good and the air consumption is small when the bearing has the high stiffness. Strict control of the structural deformation is crucial as it can significantly affect the stability. Increasing the nozzle number can improve the stability and avoid the choked flow. The findings are of great importance for the design of the orifice-compensated air bearing.
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