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ARTICLE
Influence of conical structure on sealing specific pressure under static loading
1
Laboratory of Science and Technology on Cryogenic Liquid Propulsion of CASC, Beijing Aerospace Propulsion Institute, Beijing, China
Submission date: 2025-04-10
Final revision date: 2025-05-18
Acceptance date: 2025-06-04
Online publication date: 2025-10-28
Corresponding author
KEYWORDS
TOPICS
ABSTRACT
Similarity analysis and numerical simulations are performed to investigate the effects of axial force, material physical properties, and geometric shape of the conical structure on the sealing specific pressure. The results indicate that under a certain axial force, the conical structure can achieve a high sealing specific pressure. However, the sealing specific pressure decreases with the increase in the sealing surface diameter, sealing surface width, cone angle, and friction coefficient. In terms of material physical properties, the sealing specific pressure increases with the increase in Young’s modulus of the upper cone, while other performance parameters have little effect on the sealing specific pressure. In addition, by using similarity analysis, a semi-empirical analytical expression model is proposed to represent the dependence of sealing specific pressure on the axial force, friction coefficient, material physical properties, and geometric properties of the conical structure.
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