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    Numerical study of using RDHDS connected PIP system to mitigate earthquake induced subsea pipeline vibrations

    Access Status
    Fulltext not available
    Authors
    Bi, Kaiming
    Hao, Hong
    Date
    2017
    Collection
    • Curtin Research Publications
    Type
    Conference Paper
    Metadata
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    Abstract

    © 2017 Taylor & Francis Group, London. Pipe-In-Pipe (PIP) systems have been increasingly used in the subsea pipeline applications recently. By replacing the hard centralizers with the softer springs and dashpots to connect the inner and outer pipes, a PIP system can be considered as a structure-Tuned Mass Damper (TMD) system. It therefore has the potential to mitigate subsea pipeline vibrations when subjected to different vibration sources such as vortex shedding and/or earthquake excitations. This paper proposes using Rotational Friction Hinge Dampers with Springs (RFHDSs) to connect the inner and outer pipes. The Rotational Friction Hinge Dampers (RFHDs) are used to absorb the energy induced by the external vibration sources and the springs are used to provide the stiffness to the TMD system and to restore the original locations of the inner and outer pipes. To investigate the effectiveness of this new design concept, detailed three-dimensional (3D) Finite Element (FE) model of the RFHD is developed in ANSYS and the hysteretic behavior of RFHD is firstly studied. The calculated hysteretic loop is then applied to the 3D PIP FE model to estimate the seismic response. The effectiveness of the proposed system to mitigate earthquake induced vibrations is examined by comparing the seismic response of the proposed system with the traditional PIP system.

    Citation
    Bi, K. and Hao, H. 2017. Numerical study of using RDHDS connected PIP system to mitigate earthquake induced subsea pipeline vibrations, pp. 1615-1620.
    Source Title
    Mechanics of Structures and Materials: Advancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016
    URI
    http://hdl.handle.net/20.500.11937/60942
    Department
    School of Civil and Mechanical Engineering (CME)

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