Time domain fatigue life prediction for deepwater steel catenary riser

Yang, H. Z. and Li, H.-J. (2010) Time domain fatigue life prediction for deepwater steel catenary riser. Zhendong yu Chongji = Journal of Vibration and Shock, 29(3), pp. 22-25.

Abstract

[English abstract] The time domain nonlinear dynamic analysis of a steel catenary riser (SCR) was introduced for fatigue life prediction. Since the behavior of the SCR is nonlinear in nature, the time domain analysis is better suited to capture the possible nonlinear effects associated with hydrodynamic nonlinearities and structural nonlinear properties. The dynamic response simulation of a SCR under oceanic environmental loads was carried out. The time histories of stresses were employed to predict the global riser fatigue life by use of S-N curves. Results were presented from a parametric study of the SCR with various input parameters, such as drag coefficient, buoyancy factors, seabed stiffness etc. It is shown that the predicted fatigue life is strongly dependent on these parameters. The analysis conclusions can help designers to understand the dynamic behavior of SCR and provide guidance for selection of some critical parameters used in SCR fatigue design.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Yang, Dr Hezhen
• Authors: Yang, H. Z., and Li, H.-J.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: Zhendong yu Chongji = Journal of Vibration and Shock
• ISSN: 1000-3835