Study on the Leakage Mechanism of Cone Sealing Structure in Metal Tube

Cone seal structure is widely used in metal tube connection of industrial equipment and ground vehicle. In vibration environment, the leakage failure of cone seal occur frequently, which will affect the function and reliability of the product directly. In this paper, the contact stress for typical c...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-03, Vol.322 (7), p.72068
Main Authors: Bao, Ke, Sun, Yu-juan, Xu, Dan
Format: Article
Language:English
Subjects:
Contact pressure
Contact stresses
Cyclic loads
Failure analysis
Finite element method
Leakage
Low pressure
Numerical methods
Sealing
Stress concentration
Stress distribution
Vibration analysis
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Summary:Cone seal structure is widely used in metal tube connection of industrial equipment and ground vehicle. In vibration environment, the leakage failure of cone seal occur frequently, which will affect the function and reliability of the product directly. In this paper, the contact stress for typical cone sealing structure in low pressure metal tube under vibration loading is analyzed and the mechanism of liquid leakage failure is discussed using the finite element numerical method. Results show that the circumferential contact stress distribution is uneven on the interface of cone sealing structure under the cyclic load introduced by local vibration. The contact stress is significantly lower than the initial pretension stress in some areas, which will result in the leakage failure of cone sealing structure.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/322/7/072068