0
Structures and Safety Reliability

Methodologies on Hull Girder Ultimate Strength Assessment of FPSOS

[+] Author and Article Information
Xiaozhi Wang

 ABS, 16855 Northchase Drive, Houston, TX 77060xwang@eagle.org

Haihong Sun

 ABS, 16855 Northchase Drive, Houston, TX 77060hsun@eagle.org

Tetsuya Yao

 Osaka University, 2-1, Yamadaoka, Suita 565-0871, Japanyao@naoe.eng.osaka-u.ac.jp

Masahiko Fujikubo

 Osaka University, 2-1, Yamadaoka, Suita 565-0871, Japanfujikubo@naoe.eng.osaka-u.ac.jp

Roger Basu

 ABS, 16855 Northchase Drive, Houston, TX 77060rbasu@eagle.org

J. Offshore Mech. Arct. Eng 133(3), 031603 (Mar 31, 2011) (6 pages) doi:10.1115/1.4001957 History: Received April 07, 2009; Revised April 07, 2010; Published March 31, 2011; Online March 31, 2011

Floating production, storage, and offloading systems (FPSOs) have been widely used for the development of offshore oil and gas fields because of their many attractive features. They are mostly ship-shaped and either converted from existing tankers or purpose-built. However, FPSOs have their own unique characteristics, including various operational requirements. In addition to that, the expectation of safety and economic aspects of FPSOs require an optimized structure to be designed. This calls for reliable structural assessment methodologies. One of the most important aspects of FPSO structural design and assessment is the hull girder ultimate strength. In this paper, different methodologies of hull girder ultimate strength assessment will be introduced and numerical calculations of hull girder ultimate strength will be presented based on six different FPSO designs. The results will then be analyzed in terms of their differences, and conclusions will be made based upon reliable methodologies for hull girder ultimate strength assessment of FPSOs.

FIGURES IN THIS ARTICLE
<>
Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Definition of ultimate strength, bending moment—curvature curve, M-χ

Grahic Jump Location
Figure 2

Flow chart of the procedure for the evaluation of the bending moment-curvature curve M-χ

Grahic Jump Location
Figure 9

Sketch of midship section of vessel 3

Grahic Jump Location
Figure 10

Moment-curvature response of vessel 3

Grahic Jump Location
Figure 12

Moment-curvature response of vessel 4

Grahic Jump Location
Figure 14

Moment-curvature response of vessel 6

Grahic Jump Location
Figure 11

Sketch of mishap section of vessel 4

Grahic Jump Location
Figure 8

Load-end shortening curve (average stress-average strain curve) of typical deck and bottom stiffened panel of vessel 2

Grahic Jump Location
Figure 7

Moment-curvature response of vessel 2

Grahic Jump Location
Figure 6

Sketch of midship section of vessel 2

Grahic Jump Location
Figure 5

Moment-curvature response of vessel 1

Grahic Jump Location
Figure 4

Region and boundary conditions for ISUM analysis

Grahic Jump Location
Figure 3

Stiffened plate element in HULLST

Grahic Jump Location
Figure 13

Moment-curvature response of vessel 5

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In