| Issue |
MATEC Web of Conferences
Volume 12, 2014
FDMD II - JIP 2014 - Fatigue Design & Material Defects
|
|
|---|---|---|
| Article Number | 04027 | |
| Number of page(s) | 2 | |
| Section | Poster Session 4D: Fatigue Design Against Defects | |
| DOI | https://doi.org/10.1051/matecconf/20141204027 | |
| Published online | 09 June 2014 | |
Fatigue of Clip connectors for offshore drilling risers under biaxial tension
1 Laboratoire de Mécanique des Solides, CNRS, Ecole Polytechnique, France
2 IFPEN, Direction Mécanique Appliquée, Rueil-Malmaison, France
Drilling riser connectors designed by IFPEN undergo cyclic in-phase biaxial tension in their critical area. This type of loading was reproduced on steel tubular specimens loaded in cyclic tension and internal pressure. The fatigue lives were substantially reduced when the load biaxiality was increased from 0 to 0.4 and then further to 1, which was not captured by existing fatigue criteria. A deeper investigation is thus in progress. Emphasis is laid on the separate evaluation of mean stress and biaxiality effects, often treated in the same way in existing criteria. The influence of load biaxiality on the resistance of the steel to fatigue-corrosion in seawater will also be investigated.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.