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Abstract: The microstructure of graphite used to the porous aerostatic bearing is greatly complicated. From the formative mechanism of microstructure, the fractal geometry theory is adopted to study the permeability, which is very important to the performance of porous aerostatic bearing. Furthermore, the relation between the porous graphite permeability and the fractal
dimension is established. And the correlation of the macro-scopical parameter with the microstructure is presented. Finally, the microstructure of the porous graphite is analyzed by the program of Matlab
and the permeability is obtained. The experimental results agree with the theoretical results.
Key words: Static bearing Porous graphite
Porosity Permeability
CLC No: TH133.36
Received 20051027, received in revised form 20051208 |