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Research on Performance of a Rectangular Floatation Cushion with High Stiffness for a Pneumato-static Slideway 被引量:1
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作者 ZHANG Jun-an DONG Hao LIU Bo 《International Journal of Plant Engineering and Management》 2010年第2期117-120,共4页
In this paper, a high stiffness rectangular floatation cushion with a variable-section pressure equalizing groove of an elastic membrane for a pneumato-static slideway is presented and designed in order to increase st... In this paper, a high stiffness rectangular floatation cushion with a variable-section pressure equalizing groove of an elastic membrane for a pneumato-static slideway is presented and designed in order to increase stiffness of the floatation cushion. Gas film pressure distribution and carrying capacity of the floatation cushion are studied through theoretical analysis and by using the overlapping stitching technique. The carrying capacity and stiffness were obtained by using the coupling procedure of the gas lubrication governing equation and elastic deformation of the membrane governing equation. The results of theoretical calculations can obtain a conclusion that the effect of the gas pressure makes the annular elastic membrane elastically deform that brings about changes of throttling area and pressure groove depth of the floatation cushion. It makes carrying capacity and stiffness of the new style floata- tion cushion markedly improve over the conventional flotation cushion. The new floatation cushion has a wider ap- plication and popularization of space. Key words: floatation cushion; variable-section pressure equalizing groove;stiffness 展开更多
关键词 floatation cushion variable-section pressure equalizing groove STIFFNESS
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