Analyses toward factors influencing sealing clearance of a metal rubber seal and derivation of a calculation formula

作     者：Yan Hui Zhao Yalei Liu Jianguo Jiang Hongyuan 

作者机构：School of Mechatronics Engineering Harbin Institute of Technology 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2016年第29卷第1期

页      面：292-296页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 

基　　金：supported by the Programme of Introducing Talents of Discipline to Universities(No.B07018) the Air Force Armament Department Pre-Research Foundation 

主　　题：Elastic mechanics theoryElastic modulus factor Metal rubber Seals Temperature factor 

摘      要：Sealing clearance is a key factor for a metal rubber seal＇s sealability. The expansion coef- ficient and expansion deformation in the radial direction of metal rubber have been obtained through a thermal expansion experiment of metal rubber. The influence of the elastic modulus to the sealing clearance has been analyzed theoretically. By combining the temperature and elasticity factors of metal rubber with the elastic mechanics theory, the calculation formula of the sealing clearance has been derived, and the values of the sealing clearance and the leakage rate in certain working conditions have been calculated. Experimental results are consistent with calculation results in a high degree. The calculation formula of the sealing clearance can explain the influences of the temperature and elastic modulus factors of metal rubber on the sealing clearance. It can pro- vide guidance for the study of sealing mechanism of metal rubber seals.