Numerical Analysis via Mixed Inverse Hydrodynamic Lubrication Theory of Reciprocating Rubber Seal Considering the Friction Thermal Effect

This study investigates how operating conditions such as ambient temperature and sealing pressure affect performance for a typical U-cup seal. The developed analysis method combines inverse fluid lubrication (IHL) theory the Greenwood–Williamson contact model (G–W model), effect of increasing surface due to frictional heat generated between two surfaces is considered. Commercial FE software (ABAQUS) was used simulate interference fit rubber seals pressurized process. Through this model, film distribution, working leakage, friction force in area were discussed according parameters, sealed pressure, rod velocity, temperature. simulation results demonstrate viscosity on oil formation (which varies with temperature), temperature, roughness at very small thickness.