A Study of Hydrodynamic Squeeze Film Characteristics between Parallel Circular Rough-Surface Disks
博士 === 中原大學 === 機械工程研究所 === 97 === ABSTRACT The integrated effects of surface roughness and rotating inertia upon squeeze film characteristics between parallel circular disks are expatiated in the present research. According to the Christensen stochastic approach of rough surfaces, the stochastic Re...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/72341709823901456797 |
| Summary: | 博士 === 中原大學 === 機械工程研究所 === 97 === ABSTRACT
The integrated effects of surface roughness and rotating inertia upon squeeze film characteristics between parallel circular disks are expatiated in the present research. According to the Christensen stochastic approach of rough surfaces, the stochastic Reynolds-type equation for rotating squeezing circular disks is therefore derived.
The effects of the surface roughness upon the mean squeeze film characteristics relate to the pattern of roughness structure. The closed-form solution obtained for the mean film pressure is applied to predict the mean squeeze film characteristics. As the outcome, the rotational inertia effects generate a lower mean load-carrying capacity and a shorter mean response time. In general, the surface structures with circumferential roughness increase the mean load-carrying capacity and lengthen the mean response time; On the contrary of the effects of surface roughness with radial structure has reverse effects upon the squeezing load and the response time.
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