Abstract
Steel catenary risers (SCR) have been widely used in the offshore oil industry. This paper proposes using a novel vibration control device, i.e., the pounding tuned mass damper (PTMD), to mitigate the flow-induced vibration of an SCR. The numerical model of the SCR and the PTMD has been established in ANSYS. The soil-pipe interaction is simulated by nonlinear springs based on p-y curves. A single degree of freedom structure is utilized to verify the PTMD model established in ANSYS using APDL. Afterwards, numerical studies are carried out to validate the vibration control performance of the proposed PTMD and to investigate the influence of mass ratio and the location of the PTMD. The numerical results imply that the PTMD is very effective in reducing the displacement of the SCR under different oceanic conditions. The vibration control effectiveness will increase with the increase in mass ratio. The maximum vibration reduction is achieved when the PTMD is located at the place where the largest amount of motion takes place.
Highlights
Research ArticleMitigation of Flow-Induced Vibration of Steel Catenary Risers with Pounding Tuned Mass Damper
Steel catenary risers (SCR) have been widely used in the offshore oil industry. is paper proposes using a novel vibration control device, i.e., the pounding tuned mass damper (PTMD), to mitigate the flow-induced vibration of an SCR. e numerical model of the SCR and the PTMD has been established in ANSYS. e soil-pipe interaction is simulated by nonlinear springs based on p-y curves
Afterwards, numerical studies are carried out to validate the vibration control performance of the proposed PTMD and to investigate the influence of mass ratio and the location of the PTMD. e numerical results imply that the PTMD is very effective in reducing the displacement of the SCR under different oceanic conditions. e vibration control effectiveness will increase with the increase in mass ratio. e maximum vibration reduction is achieved when the PTMD is located at the place where the largest amount of motion takes place
Summary
Mitigation of Flow-Induced Vibration of Steel Catenary Risers with Pounding Tuned Mass Damper. E remaining part of the paper is structured as follows: in Section 2, the finite element model of the SCR and the method to simulate structure-soil interaction will be presented, in Section 3, the mechanism and numerical model of the PTMD will be presented and validated, in Section 4, vibration control effectiveness and the influence of key design parameters will be discussed, and, concluding remarks will be summarized to close the paper. In order to study the vibration control performance of the proposed PTMD, the steel catenary riser reported in [43] is selected as the major structure to be controlled. The horizontal section of the steel riser was modeled by PIPE59 elements and the seabed soil was simulated by COMBIN39 elements, with the strength of the soil determined by the empirical equation proposed by Aubeny et al [48]. In (12), S denotes a wide selection of dynamic responses, including displacement, acceleration, moment, or stress
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
