| Study on Sealing Performance and Reliability of Rubber O-ring by Ansys |
| Received:March 14, 2019 Revised:March 27, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.02.0131 |
| Key Words: rubber O-ring；Ansys；finite element analysis；sealing performance；reliability；contact analysi |
| Author Name | Affiliation | E-mail | | ZHAO Minmin* | Guangzhou Mechanical Engineering Research Institute Co.,Ltd | zhaominmin@gmeri.com | | HUANG Le | Guangzhou Mechanical Engineering Research Institute Co.,Ltd | | | ZHANG Qi | Guangzhou Guoji Intelligent Rubber & Plastic Sealing Technology Co.，Ltd | | | XIA Yingsong | Anhui Zhongding Sealing Parts Co.，Ltd | | | PING Li | Hangzhou Wahaha Group Co.，Ltd | |
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| Abstract: |
| A two-dimensional axisymmetric model of rubber O-ring（referred to as O-ring） with line diameter of 7 mm was created in finite element analysis software Ansys，and the effect of radial clearance and hydraulic pressure on the sealing performance of O-ring was analysed. The results showed that hydraulic pressure had great impact on the sealing performance，while the effect of radial clearance was depended on the value of hydraulic pressure. When the hydraulic pressure was low，the effect of radial clearance was small，and when the hydraulic pressure was high，the effect of radial clearance became significant. The initial reliability of the O-ring seal was 98. 5% when the radial clearance was 0. 3 mm and the hydraulic pressure was 16 MPa. Based on the analysis of the sensitivity of random factors to the limit state function，it was found that the most significant factors influencing the reliability of O-ring were O-ring line diameter and hydraulic pressure. |
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