For the design of FPSOs the vertical bending moment is a key parameter to ensure safe operation. If analyzed at water line level, however, the unknown influence of longitudinal forces may distort the results. Hence, a segmented FPSO model with midship force transducers at two levels is investigated in various deterministic wave sequences to identify the vertical bending moment and its associated neutral axis as well as the superimposing longitudinal forces. It is shown that the neutral axis is far below the water line level, with the consequence, that extreme cyclic loads at deck level would be expected. However, as the associated longitudinal forces — even if significant — generate a counteracting moment, this effect is largely compensated. Both, frequency- and time-domain results are presented. With frequency-domain analysis the profound data for the standard assessment of structures, concerning seakeeping behaviour, operational limitations and fatigue are obtained. In addition, time-domain analysis in real rogue waves gives indispensable data on extremes, i.e. motions and structural forces.
Skip Nav Destination
ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
June 10–15, 2007
San Diego, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4268-1
PROCEEDINGS PAPER
Longitudinal Forces and Bending Moments of a FPSO Available to Purchase
Gu¨nther F. Clauss,
Gu¨nther F. Clauss
Technical University of Berlin, Berlin, Germany
Search for other works by this author on:
Andre´ Kauffeldt,
Andre´ Kauffeldt
Technical University of Berlin, Berlin, Germany
Search for other works by this author on:
Katja Jacobsen
Katja Jacobsen
Technical University of Berlin, Berlin, Germany
Search for other works by this author on:
Gu¨nther F. Clauss
Technical University of Berlin, Berlin, Germany
Andre´ Kauffeldt
Technical University of Berlin, Berlin, Germany
Katja Jacobsen
Technical University of Berlin, Berlin, Germany
Paper No:
OMAE2007-29091, pp. 89-98; 10 pages
Published Online:
May 20, 2009
Citation
Clauss, GF, Kauffeldt, A, & Jacobsen, K. "Longitudinal Forces and Bending Moments of a FPSO." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 2: Structures, Safety and Reliability; Petroleum Technology Symposium. San Diego, California, USA. June 10–15, 2007. pp. 89-98. ASME. https://doi.org/10.1115/OMAE2007-29091
Download citation file:
11
Views
Related Proceedings Papers
Related Articles
Numerical Simulation of Multiple Floating Structures With Nonlinear Constraints
J. Offshore Mech. Arct. Eng (May,2002)
Understanding the Dynamic Coupling Effects in Deep Water Floating Structures Using a Simplified Model
J. Offshore Mech. Arct. Eng (August,2008)
Vibration Behavior of Flexible Rotor System Mounted on MR Squeeze Film Damper With Thermal Growth Effect
J. Vib. Acoust (February,2012)
Related Chapters
Introduction and Scope
High Frequency Piezo-Composite Micromachined Ultrasound Transducer Array Technology for Biomedical Imaging
Measurements on Natural Dispersion
Oil Dispersants: New Ecological Approaches
Background Information
Guidebook for the Design of ASME Section VIII Pressure Vessels, Third Edition