Evaluation Method for Leakage of Cylindrical Sealing Surfaces with Internal Meshing and Contractual Curvature
Aiming at the metal sealing problem of high-pressure media,a cylindrical surface analysis model was obtained using finite element analysis method.The actual contact area of the sealing surface under different interference amounts was obtained using the contact stress and theoretical contact area of the sealing surface as input parameters.Combined with the modified micro leakage calculation model,the leakage law of cylindrical sealing surfaces with different curvatures was studied.Research has shown that as the interference of the ring increases to 0.04 mm,stable contact occurs on the sealing surface,and the leakage no longer changes with the interference.The sealing performance meets the minimum sealing pressure requirement.This prediction method takes the average contact pressure of the sealing surface as the sole variable and can predict the leakage of any size cylindrical sealing surface with different meshing modes.The accuracy of the model was verified by calculating the leakage rate and experimental data,it is of great significance for the design and evaluation of metal high-pressure seals.
minimum sealing specific pressurefractal theoryleakage modelcurvaturecylindrical sealing surface
万方数据
维普
