Abstract
A comparative study of the linear, wave-induced response of a 5-module mobile offshore base (MOB) based on two structural models is reported herein. The lumped parameter, rigid module, flexible connector (RMFC) model and a more detailed finite element shell model were used. The 1500 m×152 m MOB corresponds to McDermott's design concept, where the modules are hinge-connected at the deck. The wave-induced response was determined based on linear hydroelasticity, which involves linear potential theory for the fluid forces. The response in both regular and irregular seas is compared. The results show that the simplified RMFC model can predict the response very well if the natural frequencies and associated normal modes correspond well to the FEA model's frequencies and modes. Under these conditions, the simpler RMFC model, which is especially useful for preliminary and conceptual design during which parametric studies are carried out, can therefore be used with a good deal of confidence.
Sign-in/Register to access full text options 
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.
