Numerical study of using RDHDS connected PIP system to mitigate earthquake induced subsea pipeline vibrations
MetadataShow full item record
© 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.
Showing items related by title, author, creator and subject.
Bi, Kaiming; Hao, Hao (2016)Pipe-in-pipe (PIP) systems are increasingly used in subsea pipeline applications due to their favourable thermal insulation capacity. Pipe-in-pipe systems consist of concentric inner and outer pipes, the inner pipe carries ...
Passive vibration control of cylindrical offshore components using pipe-in-pipe (PIP) concept: An analytical studyMatin Nikoo, H.; Bi, Kaiming; Hao, H. (2017)© 2017 Elsevier Ltd This paper aims to propose a design of using the revised PIP system to control vortex induced vibrations (VIV) of cylindrical structural components. Analytical studies are carried out to examine the ...
Effectiveness of using pipe-in-pipe (PIP) concept to reduce vortex-induced vibrations (VIV): Three-dimensional two-way FSI analysisMatin 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 ...