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| Finite Element Analysis and Test Verification of T-groove Seal Structure |
| Received:January 15, 2020 Revised:March 15, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.07.011 |
| KeyWord:T-groove seal structure finite element analysis seal failure aging life |
| Author | Institution |
| MENG Li-hua |
AVIC China Aero-polytechnology Establishment, Beijing , China |
| LIU Hao-kuo |
AVIC China Aero-polytechnology Establishment, Beijing , China |
| BIAN Zhi |
AVIC China Aero-polytechnology Establishment, Beijing , China |
| HUANG Shuang |
AVIC China Aero-polytechnology Establishment, Beijing , China |
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| Abstract: |
| The paper aims to optimize the design of T-type seal structure by finite element analysis. In this paper, a two-dimensional axisymmetric model of T-groove seal structure for hydraulic system was established by ABAQUS. The effects of transition fillet, groove width and inclination angle on the stress distribution and contact stress of the seal ring were analyzed and calculated. The analysis conclusion was verified by designing aging life test of the seal ring. With the increase of transition fillet (R0.5~R2) and the decrease of inclination angle (10°~3°), the maximum local stress and contact stress of the sealing ring decreased; while with the increase of groove width (10~18 mm), the maximum local stress of the sealing ring increased and the contact stress decreased gradually. The contact stress of the sealing structure was larger than that of the sealing medium pressure by 0.7 MPa. Finally, it was proved by experiments that the sealing structure used for analysis satisfied the sealing performance, and unreasonable design would reduce the life of the sealing ring. In case of low pressure of sealing medium, it is recommended to select big transition fillet (recommended value of R2), small inclination angle (recommended value is 5°~6°), small slot width (recommended value is 1.2~1.5 times of the diameter of sealing ring cross section). |
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