i-manager Publications

Nonlinear Dynamic and Probabilistic Risk Analysis of Titanium Marine Riser

Rizwan Ahmad Khan *, Atul Singla**, Atul Goyal ***

* Associate Professor, Department of Civil Engineering, Z. H College of Engineering and Technology, A.M.U, Aligarh, India.

**,*** Graduate, Department of Civil Engineering, National Institute of Technology, Jalandhar, Punjab, India.

Periodicity:December - February'2019
DOI : https://doi.org/10.26634/jce.9.1.14575

Abstract

Titanium has numerous good properties such as high strength, high corrosion resistance and it has low density allowing weight savings thus making it attractive for using in construction of Marine Risers[8]. This paper presents the dynamic and probabilistic analysis of Titanium Riser under the loadings caused by random sea waves of different heights. The dynamic analysis of riser is done by finite element analysis method using ABAQUS/AQUA. Using the Fracture Mechanics model and stress vs number of cycles (S-N) model various sea states were investigated and reliability of Titanium Riser under deep sea has been estimated. The approach based on reliability considers various uncertainties which helps to make effective designs of risers. Results are presented which shows variation of bending stress of riser with the variation in depth of riser. The stress-time history and PSD (Power Spectral Density) curves shows the effect of nonlinearities on bending stress. The variation of reliability index due to various uncertainties are also presented.

Keywords

Probabilistic, Nonlinear, Titanium, Riser, Reliability, Fatigue , Fracture

How to Cite this Article?

Khan, R. A., Singla, A., & Goyal, A (2019). Nonlinear Dynamic and Probabilistic Risk Analysis of Titanium Marine Riser. i-manager’s Journal on Civil Engineering, 9(1), 33-46. https://doi.org/10.26634/jce.9.1.14575

References

[1]. Baarholm, G. S., Larsen, C. M., & Lie, H. (2006). On fatigue damage accumulation from in-line and cross-flow vortex-induced vibrations on risers. Journal of Fluids and Structures, 22(1), 109-127.

[2]. Clarke, T., Jacques, R., Bisognin, A., Camerini, C., Damasceno, S., & Strohaecker, T. (2011). Monitoring the structural integrity of a flexible riser during a full-scale fatigue test. Engineering Structures, 33(4), 1181-1186.

[3]. DNV -RP -C203. (2004). Fatigue Strength Analysis of Offshore Steel Structures.

[4]. DNV -RP- H103. (2011). Modelling and Analysis of Marine Operations.

[5]. Kaewunruen, S., Chiravatchradej, J., & Chucheepsakul, S. (2005). Nonlinear free vibrations of marine risers/pipes transporting fluid. Ocean Engineering, 32(3-4), 417-440.

[6]. Katifeoglou, S. A., & Chatjigeorgiou, I. K. (2012). Dynamic interaction of catenary risers with the seafloor. Applied Ocean Research, 38, 1-15.

[7]. Khan, R. A., & Ahmad, S. (2014). Bi-linear fatigue and fracture approach for safety analysis of an offshore structure. Journal of Offshore Mechanics and Arctic Engineering, 136(2), 021602.

[8]. Khan, R., A., Khandelwall, A., Ahmad, S. (2015). Nonlinear three dimensional Dynamic Analysis of Titanium Drilling Riser. Journal of Offshore Structure and Technology, 2, 27-40.

[9]. Leira, B. J., Karunakaran, D., Bjorset, A., & Jiao, G. (1998). Fracture and fatigue reliability assessment of deep-water risers. In American Society of Mechanical Engineers, 17^thInternational Conference on Offshore Mechanics and Arctic Engineering(USA) (p. 9).

[10]. Low, Y. M., & Srinil, N. (2016). VIV fatigue reliability analysis of marine risers with uncertainties in the wake oscillator model. Engineering Structures, 106, 96-108.

[11]. Mukundan, H., Modarres-Sadeghi, Y., Dahl, J. M., Hover, F. S., & Triantafyllou, M. S. (2009). Monitoring VIV fatigue damage on marine risers. Journal of Fluids and Structures, 25(4), 617-628.

[12]. Rivero-Angeles, F. J., Vázquez-Hernández, A. O., & Martinez, U. (2014). Vibration analysis for the determination of modal parameters of steel catenary risers based on response-only data. Engineering Structures, 59, 68-79.

[13]. Stahl, B., & Banon, H. (2002, January). Fatigue safety st factors for deepwater risers. In ASME 2002 21 International Conference on Offshore Mechanics and Arctic Engineering (pp. 349-355). American Society of Mechanical Engineers.

[14]. Wang, J., Fu, S., Baarholm, R., Wu, J., & Larsen, C. M. (2014). Fatigue damage of a steel catenary riser from vortex-induced vibration caused by vessel motions. Marine Structures, 39, 131-156.

Nonlinear Dynamic and Probabilistic Risk Analysis of Titanium Marine Riser

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