Tese: Integrity of an offshore structure subjected to waves
Aluno(a) : Victor Fernando Deorsola SacramentoOrientador(a): Rubens Sampaio
Área de Concentração: Mecânica Aplicada
Data: 14/01/2014
Link para tese/dissertação: https://www.maxwell.vrac.puc-rio.br/colecao.php?strSecao=resultado&nrSeq=37700@2
Resumo: This work presents a method for evaluation of the fatigue resistance of a drilling tower considering the sea surface elevation, the dynamics of the platform on which the tower is installed and the dynamics of the tower itself. Reduced order models are used for obtaining the sea surface elevation and the dynamics of the tower, and the uncertainties on the parameters of the components of the system can be included in the analysis as well. The analysis can be done for several sea states, according its probability distribution, and no assumption about the probability distribution of the stress ranges has to be made previously. The histogram for the distribution of stress ranges for the entire working life of the equipment is obtained using a Rainflow technique. The results and the uncertainties on them are discussed.