Simulation Analysis of Elastohydrodynamic Lubrication of Y-shaped Pneumatic Seal
Pneumatic seals are widely used in reciprocating drive mechanisms,where friction and leakage are the main indicators for evaluating sealing performance.A numerical analysis model for pneumatic reciprocating Y-shaped sealing rings was established using the theory of elastohydrodynamic lubrication,which couples fluid mechanics,contact mechanics,and microscopic deformation.Obtain the oil film thickness,oil film pressure,and rough peak contact pressure distribution within the sealed area through numerical iteration,as well as the flow rate and friction force on the piston rod surface within a single stroke.Analyzed the elastohydrodynamic lubrication characteristics and sealing performance of Y-shaped sealing rings under different aerodynamic conditions.The results indicate that increasing the sealing pressure will lead to an increase in friction and reverse pumping rate,and increasing the reciprocating speed is beneficial for reducing leakage.
万方数据
维普
