In this study, the dieless bulging and nonlinear buckling behaviours of a stainless longan-shaped pressure hull were investigated. According to the Cassini oval equation, the longan shape has a shape index of 0.1. The lengths of the major and minor axes of the designed longan-shaped pressure hull were approximately 400 and 396 mm, respectively. The wall thickness of this pressure hull was 1 mm. The Huber–von Mises stress and first yielding load of the designed longan-shaped shell and its inscribed polyhedral preform were investigated analytically and experimentally. Moreover, the dieless bulging of the designed longan-shaped pressure hull was investigated numerically and experimentally by using the nonlinear finite element method and a hydrostatic test, respectively. The analytical, experimental, and numerical results exhibited good agreement with each other.


    Access

    Download


    Export, share and cite



    Title :

    Dieless bulging and nonlinear buckling of longan-shaped pressure hull


    Contributors:
    Rui He (author) / Jian Zhang (author) / Sakdirat Kaewunruen (author) / Ming Zhan (author) / Ping Liu (author)


    Publication date :

    2023




    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

    Free bulging and nonlinear buckling of teardrop-shaped pressure hull

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

    Free access

    Hydroforming and buckling of a longan-shaped pressure vessel with longitudinal tension rods

    He, Rui / Zhang, Jian / Zhu, Yongmei et al. | Taylor & Francis Verlag | 2025


    Buckling of multi-segment underwater pressure hull

    Blachut, J. / Smith, P. | Tema Archive | 2008


    Nonlinear Bulging Factor Based on R-Curve Data

    Jeong, D. Y. / Tong, P. / United States; Federal Aviation Administration et al. | British Library Conference Proceedings | 1994