Laboratory of Analysis and Reliability of Offshore Structures - LACEO
During the last 15 years LACEO has also acted in the area of structural reliability and has employed this methodology on important PETROBRAS projects, such as the use of polyester fibers in Taut Leg mooring system lines allowing oil exploitation in deeper waters of the Brazilian coast. Other projects developed in this area deal with risk based inspection planning of oil industry equipment and structures. In this approach the results of previous inspections are considered to establish the schedule for future inspections.
Optimization of fatigue periodical inspections of fixed platform joints
Through the development of numerical models of local analysis using finite element method, LACEO has worked in several innovative projects in partnership with PETROBRAS such as: torpedo-stake project, flexible risers for bodies of water equal or greater than 2800m project and re-qualification of flexible lines obtaining service life extension through their use in new applications.
Local analysis of a flexible pipe
The interaction with industry qualified LACEO to develop computational programs for specific areas of offshore engineering such as:
• Analysis of risers and mooring systems
• Analysis of floating unit movements
• Foundation analysis
• Statistical analysis of temporal series
• Structural reliability analysis
• Fatigue inspection planning in fixed platforms
Structure random analysis – Estimation of response extreme values
LACEO seeks to contribute to the academic knowledge and professional curriculum of its undergraduate, and master and doctoral degree students, involving them, whenever it is possible, in its technological projects.
LACEO research lines are mostly devoted to the actual challenges of offshore oil exploration and exploitation. Currently the main research lines are:
• Probabilistic methods for offshore structure analysis and design
• Vortex induced vibrations and movements (VIV e VIM)
• Numerical models for soil-structure interaction in offshore riser and stake analysis
• Local and integrity analyses of flexible pipes
Currently LACEO occupies a room of approximately 200m2 in the basement of Block I-2000 of COPPE/UFRJ and has a computational infra-structure to house 25 researchers. Besides, the laboratory counts with a cluster of personal computers with more than 50 processors. However, in a short time LACEO will have new facilities that are being constructed, in partnership with other laboratories in a COPPE/UFRJ annex.
Prof. Luís Volnei Sudati Sagrilo (professor responsável)
Prof. Edison Castro Prates de Lima
Prof. Gilberto Bruno Ellwanger
Marcos Queija de Siqueira
Ana Cristina da Cunha Silva Gonçalves