Author(s)

Ana Lucia Fernandas Lima Torres, Marcio Martins Mourelle, Marcos Queija de Siqueira & Gilberto Bruno Ellwanger

Abstract

- The structural fatigue verification of a steel catenary riser model is performed by means of two random procedures of analysis. One of them is a nonlinear time-domain approach, based on simulation technique. The other one is a linearized frequency-domain approach, that considers that the structure presents a nonlinear static response and the dynamic response is almost linear around the static deformed configuration. Fatigue damage is calculated based on S-N curves and the Palmgren-Miner's rule. PETROBRAS in-house software were used for the analyses. Results are compared and commented. INTRODUCTION The steel catenary riser (SCR) was adopted by PETROBRAS S.A. as an alternative for the oil and gas exploitation

Keywords