...布；气膜刚度；开启力；数值模拟；端面间隙 [gap=11511]Key words: dry gas seal; pressure distribution; gas film stiffness; opening force; numerical simulation; face clearance ..
The gasfilmstiffness of air bearing reflected its carrying capacity, was an important index of air bearing quality.
气浮轴承的气膜刚度代表其承载能力，是衡量气浮轴承质量的一项重要指标。
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The effects of surface roughness at different areas of the seal faces on the performances such as gasfilmstiffness and leakage rate of a S-DGS were studied.
The results indicate that the film pressure distribution is changed, and the performance parameters such as opening force, gasfilmstiffness, leakage are dramatically influenced by the face coning.