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    Effectiveness of Using RFHDS Connected PIP System for Subsea Pipeline Vibration Control

    Access Status
    Fulltext not available
    Authors
    Bi, Kaiming
    Hao, Hong
    Chen, Wensu
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Bi, K. and Hao, H. and Chen, W. 2018. Effectiveness of Using RFHDS Connected PIP System for Subsea Pipeline Vibration Control. International Journal of Structural Stability and Dynamics. 18 (8): Article ID 1840005.
    Source Title
    International Journal of Structural Stability and Dynamics
    DOI
    10.1142/S0219455418400059
    ISSN
    0219-4554
    School
    School of Civil and Mechanical Engineering (CME)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DE150100195
    URI
    http://hdl.handle.net/20.500.11937/72582
    Collection
    • Curtin Research Publications
    Abstract

    Pipe-in-pipe (PIP) system can be considered as a structure-tuned mass damper (TMD) system by replacing the hard centralizers by the softer springs and dashpots to connect the inner and outer pipes. With properly designed connecting devices, PIP system therefore has the potential to mitigate the subsea pipeline vibrations induced by various sources, such as earthquake or vortex shedding. This study 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 responses. The effectiveness of the proposed system to mitigate seismic induced vibrations is examined by comparing the seismic responses of the proposed system with the conventional PIP system. The influences of various parameters, such as the preload on the bolt, the friction coefficient and the spring stiffness, on the RFHD hysteresis behavior and on the seismic responses of PIP system are investigated and some suggestions on the RFHDS design are made.

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      Matin Nikoo, H.; Bi, Kaiming; Hao, H. (2018)
      Pipe-in-pipe (PIP) systems have been increasingly used in offshore applications because of their favourable thermal insulation capacity. Very recently, the conventional PIP system was slightly revised by using carefully ...
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