O形橡胶圈真空密封性能有限元分析  

Finite Element Analysis of Vacuum Sealing Performance of O-ring

作　　者：任琪琛 孙志和[1,2] 王沛 胡居利[1,2] 卢毛磊 黄倩[1,2] REN Qi-chen;SUN Zhi-he;WANG Pei;HU Ju-li;LU Mao-lei;HUANG Qian(Vacree Technology Co.,Ltd,Hefei 230088,China;Anhui Key Laboratory of Low Temperature Technology,Hefei 230088,China)

机构地区：[1]安徽万瑞冷电科技有限公司,安徽合肥230088 [2]低温技术安徽省重点实验室,安徽合肥230088

出　　处：《真空》2021年第5期37-41,共5页Vacuum

摘　　要：真空容器通常采用O形橡胶圈配合矩形密封槽实现真空密封。本文介绍了O形橡胶圈真空密封的设计,利用ANSYS建立了O形圈两种矩形密封槽非线性有限元分析模型,研究了不同压缩率及真空度下O形圈Von Mises应力、接触应力、接触长度的变化,计算分析了不同压缩率下真空泄漏率的变化。为真空容器O形圈真空密封可靠设计及性能优化提供了依据。Vacuum vessels usually use O-ring rubber with rectangular sealing groove to achieve vacuum sealing.In this paper,the design of O-ring vacuum seal is introduced.The nonlinear finite element analysis models of two kinds of rectangular sealing groove of O-ring are established by ANSYS.The changes of Von Mises stress,contact stress and contact length of O-ring under different compression ratio and vacuum are studied.The change of vacuum leakage rate under different compression rate is calculated and analyzed.It may provide a basis for reliable design and performance optimization of O-ring vacuum sealing of vacuum vessel.

关 键 词：真空密封 Von Mises应力 接触应力 泄漏率 

分 类 号：TB743[一般工业技术—材料科学与工程]