Cylindrical Shells with Tunable Postbuckling Features Through Non-Uniform Patterned Thickening Patches

    Research output: Contribution to journalArticle

    Abstract

    The research reported herein follows the increased interest in buckling-induced functionality for novel materials and devices with a focus on cylindrical shells as a suitable structural prototype. The paper proposes the concept of using patterned thickening patches on the surface of cylindrical shells to modify and control their elastic postbuckling response. Cylindrical shells with non-uniform thickness distributions (NTD) were fabricated through 3D printing to understand rules for pattern designs and then tested under loading-unloading cycles. Strategic thickening patches act as governing imperfections that modify the response type, the number, the location and the sequence of the localized buckling events. The use of patterned thickening patches and their layout provides diverse design opportunities for a desired elastic postbuckling response and can be potentially used in design materials and structures with switchable functionalities.

    Original languageEnglish (US)
    JournalInternational Journal of Structural Stability and Dynamics
    DOIs
    StateAccepted/In press - 2017

    Profile

    Cylindrical shell
    Patch
    Postbuckling
    Buckling
    Unloading
    Printing
    Defects
    Material design
    Design patterns
    Imperfections
    Layout
    Prototype
    Cycle

    Keywords

    • 3D printing
    • cylindrical shells
    • experiment
    • Postbuckling
    • variable stiffness

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Aerospace Engineering
    • Ocean Engineering
    • Mechanical Engineering
    • Applied Mathematics

    Cite this

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    abstract = "The research reported herein follows the increased interest in buckling-induced functionality for novel materials and devices with a focus on cylindrical shells as a suitable structural prototype. The paper proposes the concept of using patterned thickening patches on the surface of cylindrical shells to modify and control their elastic postbuckling response. Cylindrical shells with non-uniform thickness distributions (NTD) were fabricated through 3D printing to understand rules for pattern designs and then tested under loading-unloading cycles. Strategic thickening patches act as governing imperfections that modify the response type, the number, the location and the sequence of the localized buckling events. The use of patterned thickening patches and their layout provides diverse design opportunities for a desired elastic postbuckling response and can be potentially used in design materials and structures with switchable functionalities.",
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    author = "Nan Hu and Rigoberto Burgueño",
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    KW - variable stiffness

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