OS16-2-4 A Study on the Analysis of Contact Stress of O-ring under Uniform Squeeze Rate by Photoelastic Experimental Hybrid Method

Abstract

In this paper, photoelastic experimental hybrid method using external traction free boundary condition and using the relative equation of two stress functions in contact problems are developed. Their validities are confirmed through experiments and discussions Hertz's contact theory and two photoelastic experimental hybrid methods explained above are applied to the stress analysis of O-ring under 10% or 20% squeeze rate. Among them, the photoelastic experimental hybrid method using the relative equation of two stress functions in contact problems is most effective. When squeeze rates of O-ring are 20%, Maximum of absolute x is greater than maximum of absolute y by little. But they are almost equal to each other. Maximums of absolute xy are 1/5 of absolute x when squeeze rate of O-ring 20%.

Analysis of Contact Surface Wear Performance of O-Ring Dynamic Seal Based on Archard Model

“…Salant calculated and compared the performance of various sealing forms based on Reynolds equation [7]. Nam proposed a hybrid method for photoelastic experiments by using the free boundary conditions of external forces and the relative equations of two stress functions in contact problems [8]. Schmidt established the theoretical model of mixed lubrication of O-ring sealing surface by ABAQUS software, but it was only limited to static load, not specific to dynamic load simulation [9]; Ong proposed using finite element method to solve the problems of axisymmetric fluid solid coupling and rubber stainless steel mixed lubrication in reciprocating seals [10].…”