关键词: 气悬浮, 微摩擦气缸, Fluent仿真, 卸压槽

Abstract:

For overcoming the deficiencies of former tiny friction pneumatic cylinder applied in a passive zero-spring-rate suspension system, a new type of tiny friction pneumatic cylinder with pressure relief groove was putted forward. A Fluent simulation model of gaseous film between the surface of the piston and the cylinder tube was established. The conclusion after simulation by  Fluent demonstrates the new one with groove has more reasonable pressure distribution. The area between two rows of flow restriction orifice has more regular and stable bearing capacity. That makes axis of the piston parallel with the axis of the cylinder tube. And by physical experiments,the simulation conclusion has been confirmed that the new one with groove has better stability and better ability to bear lateral force.

Key words: air-suspending, tiny friction cylinder, Fluent simulation, pressure relief groove