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    Numerical analysis of the swage autofrettage process for cylindrical high pressure vessels

    Author
    Aiello, Christopher Jared
    View/Open
    177347_Aeillo_rpi_0185E_10818.pdf (1.194Mb)
    Other Contributors
    Maniatty, Antoinette M.; Picu, Catalin R.; Shephard, M. S. (Mark S.); Lewis, Daniel J.; Macri, Michael F. II;
    Date Issued
    2016-05
    Subject
    Mechanical engineering
    Degree
    PhD;
    Terms of Use
    This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.;
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/20.500.13015/1705
    Abstract
    In this work the swage autofrettage process is examined with respect to the influence of design variables on the residual stress field remaining in a cylindrical pressure vessel after processing. A material model is derived that captures the behavior of high strength steel ASTM A723 during fully reversed plastic strain cycles, including the Bauschinger effect and changes in the elastic stiffness. An algorithm for implementing this material model in a finite element code is provided and the performance is demonstrated through simulation of the swage process with results compared to experimental strain data obtained during the swage process. A parametric study is performed that examines the influence of wall ratio and bore interference on the residual stress field.;
    Description
    May 2016; School of Engineering
    Department
    Dept. of Mechanical, Aerospace, and Nuclear Engineering;
    Publisher
    Rensselaer Polytechnic Institute, Troy, NY
    Relationships
    Rensselaer Theses and Dissertations Online Collection;
    Access
    Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.;
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    • RPI Theses Online (Complete)

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