Volume 41 Issue 6
Jun.  2026
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XU Yuhan, CUI Ying, FENG Wenxuan, et al. Comparison of optimized design and sealing performance of beam seal structure with two types of female connectors[J]. Journal of Aerospace Power, 2026, 41（6）：20250202 doi: 10.13224/j.cnki.jasp.20250202
Citation: XU Yuhan, CUI Ying, FENG Wenxuan, et al. Comparison of optimized design and sealing performance of beam seal structure with two types of female connectors[J]. Journal of Aerospace Power, 2026, 41（6）：20250202 doi: 10.13224/j.cnki.jasp.20250202
shu

Comparison of optimized design and sealing performance of beam seal structure with two types of female connectors

doi: 10.13224/j.cnki.jasp.20250202

  • Naval Architecture and Ocean Engineering College，Dalian Maritime University，Dalian Liaoning 116026，China

  • Received Date: 2025-04-25
    Available Online: 2026-01-24
    Abstract

  • The structural design of the female connector in aerial beam seal structure is critical to ensuring high-pressure sealing performance. The S-index, which integrates the contact stress and the leakage characteristics of the microscopic rough sealing interface, was used as the criterion for sealing performance evaluation, and based on the macroscopic contact finite element model, the structural sensitivity parameters affecting the sealing performance of two types of female connectors (elliptical-grooved and double-tapered), were identified using the Sobol global sensitivity method. Further, the optimized design structure of two types of female connectors was obtained by using radial basis function neural network model with multi-island genetic algorithm. On this basis, numerical simulation was conducted to obtain the variation of contact stress and plastic strain at the sealing interface of the two types of female connectors with the preload force. Comparative studies revealed that under internal fluid pressures of 28 MPa and 35 MPa, the elliptical-grooved female connector exhibited an S-index value exceeding that of the double-tapered female connector by over 64%, indicating significantly enhanced sealing performance. Moreover, its relatively limited plastic deformation rendered it more suitable for ensuring reliable sealing in demountable pipe connectors subjected to repeated assembly cycles.

     

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