An analysis and simulation on air film of a pneumatic strip shape measuring roll

The pressure distribution within pneumatic strip shape measuring roll directly affected its specifications. It presented a finite difference equation of the air film regiona film corresponding to an orifice. An analysis and simulation on film pressure field and the bearing capacity were computed with the principle of Reynolds equation. The results showed that the pressure in measuring holes was smooth; the eccentricity and bearing capacity was basically a linear relationship under a certain condition. The pressure changes in the measuring holes could be used to measure the force of roll collar. The results presented in this paper laid a theoretical basis for design of pneumatic strip shape measuring roll.