This study applied free bulging to fabricate a teardrop-shaped pressure hull and analyzed the nonlinear buckling behavior of this hull. A preform made from stainless steel plates was fabricated, involving blanking, bending, and welding. Then, a teardrop-shaped pressure hull was formed through free bulging. Seven conical segments were installed inside the pressure hull. The segments near the poles had a nominal thickness of 0.851 mm, and the two middle segments of the preform had a nominal thickness of 1.084 mm. Theoretical and experimental analyses were conducted to determine the equivalent stress and yield load of the teardrop-shaped hull and preform. Subsequently, the buckling behavior of the fabricated hull was investigated. Finally, a nonlinear finite element method was used to analyze the bulging and buckling of the teardrop-shaped pressure hull. The findings indicate that free bulging contributes to promisingly manufacturing teardrop-shaped pressure hulls for underwater observatories and other related equipment.


    Access

    Download


    Export, share and cite



    Title :

    Free bulging and nonlinear buckling of teardrop-shaped pressure hull


    Contributors:
    Jian Zhang (author) / Xiaode Ding (author) / Ming Zhan (author) / Xinhu Zhang (author)


    Publication date :

    2024




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Free bulging and nonlinear buckling of teardrop-shaped pressure hull

    Zhang, Jian / Ding, Xiaode / Zhan, Ming et al. | Elsevier | 2024

    Free access

    Dieless bulging and nonlinear buckling of longan-shaped pressure hull

    Rui He / Jian Zhang / Sakdirat Kaewunruen et al. | DOAJ | 2023

    Free access

    Teardrop shaped vehicular mirror

    SCHMIDT WILLIAM / SWAIN DANIEL M | European Patent Office | 2017

    Free access

    Drag Reduction with Teardrop-shaped Dimples

    Tay, Jonathan / Lim, Tee Tai | AIAA | 2018


    Drag Reduction with Teardrop-shaped Dimples (AIAA 2018-3528)

    Tay, Jonathan / Lim, Tee Tai | British Library Conference Proceedings | 2018