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음압 직각 다공질 공기베어링의 동특성에 관한 유한차분 해석
콴폴리냐(Polina Khan),이춘무(Chun Moo Lee),김은효(Eun Hyo Kim),황평(Pyung Hwang) 한국트라이볼로지학회 2006 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.22 No.2
The numerical analysis of the negative pressure porous gas bearings is presented. The pressure distribution is calculated using the finite difference method. The Reynolds equation and Darcy's equation are solved simultaneously. The air bearing stiffness and damping are evaluated using the perturbation method. Rectangular uniform grid is employed to model the bearing. The vacuum preloading is considered. The pressure in the vacuum pocket is assumed to be a constant negative pressure. The total load, stiffness, damping and flow rate are calculated for several geometrical configurations and several values of negative pressure. It is found that too large vacuum pocket can result in negative total force.
콴 폴리냐(Polina V. Khan),이춘무(Chun Moo Lee),김은효(Eun Hyo Kim),황평(Pyung Hwang) 한국트라이볼로지학회 2005 한국트라이볼로지학회 학술대회 Vol.2005 No.11
The numerical analysis of the negative pressure porous gas bearings is presented. The pressure distribution is calculated using the finite difference method. The Reynolds equation and Darcy's equation are solved simultaneously The air bearing stiffness is evaluated using the perturbation method. The vacuum preloading is considered. The pressure in the vacuum pocket is assumed to be a constant negative pressure. The total load, stiffness and flow rate are calculated for several geometrical configurations and several values of negative pressure. It is found that too large vacuum pocket can result in negative total force.