This paper introduces a methodology that can be used to verify damaged vertical webs from Semi-Submersible, Mobile Offshore Drilling Unit (MODU) as well as others offshore structures by finite element method. This paper presents an example applied to a vertical web from a triangular MODU, which consists of a triangular deck, three columns, and other supporting structure. It was subjected to damage to one of the three pontoons. The methodology isolates one of the damaged vertical webs and applies the boundary condition on the adjacent structure where the web is located. The web was modeled, using FEM in the both original and damaged condition based on information gathered from a 3D scanning system. The structure was evaluated using the American Bureau Shipping (ABS) Rules and Guides, [1] as design criteria. Based on the results of the analysis, the damaged member slightly exceeds the allowable limits. Reinforcements of the damaged areas were implemented on the damaged panels in order to reduce the stresses acceptable levels.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5533-1
PROCEEDINGS PAPER
Methodology to Verify Residual Strength in Damaged Pontoon’s Vertical Webs Using FEM Buckling and Nonlinear Analysis Available to Purchase
Luiz Carlos H. Ricardo,
Luiz Carlos H. Ricardo
ABS Group, Rio de Janeiro, RJ, Brazil
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Fernando de Avellar Torres,
Fernando de Avellar Torres
ABS Group, Rio de Janeiro, RJ, Brazil
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João Franciso B. Ruiz
João Franciso B. Ruiz
ABS Group, Rio de Janeiro, RJ, Brazil
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Luiz Carlos H. Ricardo
ABS Group, Rio de Janeiro, RJ, Brazil
Fernando de Avellar Torres
ABS Group, Rio de Janeiro, RJ, Brazil
João Franciso B. Ruiz
ABS Group, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2013-10907, V02BT02A008; 9 pages
Published Online:
November 26, 2013
Citation
Ricardo, LCH, de Avellar Torres, F, & Ruiz, JFB. "Methodology to Verify Residual Strength in Damaged Pontoon’s Vertical Webs Using FEM Buckling and Nonlinear Analysis." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 2B: Structures, Safety and Reliability. Nantes, France. June 9–14, 2013. V02BT02A008. ASME. https://doi.org/10.1115/OMAE2013-10907
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