Fatigue Damage Analysis of Offshore Structures using Hot-Spot Stress and Notch Strain Approaches

• Type: Article in International Conference Proceedings Book
• Date: 2019

Authors

António Mourão (Author) Other; José A. F. O. Correia (Author) FEUP; José M. Castro (Author) FEUP; Miguel Correia (Author) Other; Grzegorz Lesiuk (Author) Other; Nicholas Fantuzzi (Author) Other; Abílio M. P. de Jesus (Author) Other; Rui Calçada (Author) FEUP

Conference proceedings International

Title: EXPERIMENTAL MECHANICS OF SOLIDS

Pages: 146-154

28th Symposium on Experimental Mechanics of Solids

Jachranka, POLAND, OCT 17-20, 2018

Indexing

ISI Web of Knowledge - 9 Citations

Other information

Authenticus ID: P-00R-2Y8

DOI: 10.21741/9781644900215-21

Abstract (EN): In offshore structures, the consecutive environmental and operational loading lead to an ever-changing stress state in the topside structure as well as in the substructure, which for offshore jacket-type platforms (called of fixed offshore structures) commonly used, result in fatigue damage accumulation. A wide variety of codes and recommended practices provide approaches in order to estimate the fatigue damage in design phase and remaining life in existing structures. In this research work, fatigue damage accumulation analyses applied to an offshore jacket-type platform using hot-spot stress and notch strain approaches are presented. These analyses are performed using wave information from the scatter diagram collected in North Sea. The wave loads used in this analysis were obtained using the Stokes 5th order wave theory and Morrison formula. The jacket-type offshore structure under consideration has a total height of 140.3 meters, a geometry at mud line of 60x80 meters and composed by tubular elements.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9