Version 1
: Received: 27 November 2023 / Approved: 27 November 2023 / Online: 27 November 2023 (14:57:50 CET)
How to cite:
Cheng, S.; Yu, Y.; Cui, Y.; Wu, S.; Zhao, M.; Yu, J.; Yang, Z. Analysis of Motion Mechanism and Steel Catenary Riser Failure Probability of the Semi-submersible Platform under the Mooring Line Failure. Preprints2023, 2023111713. https://doi.org/10.20944/preprints202311.1713.v1
Cheng, S.; Yu, Y.; Cui, Y.; Wu, S.; Zhao, M.; Yu, J.; Yang, Z. Analysis of Motion Mechanism and Steel Catenary Riser Failure Probability of the Semi-submersible Platform under the Mooring Line Failure. Preprints 2023, 2023111713. https://doi.org/10.20944/preprints202311.1713.v1
Cheng, S.; Yu, Y.; Cui, Y.; Wu, S.; Zhao, M.; Yu, J.; Yang, Z. Analysis of Motion Mechanism and Steel Catenary Riser Failure Probability of the Semi-submersible Platform under the Mooring Line Failure. Preprints2023, 2023111713. https://doi.org/10.20944/preprints202311.1713.v1
APA Style
Cheng, S., Yu, Y., Cui, Y., Wu, S., Zhao, M., Yu, J., & Yang, Z. (2023). Analysis of Motion Mechanism and Steel Catenary Riser Failure Probability of the Semi-submersible Platform under the Mooring Line Failure. Preprints. https://doi.org/10.20944/preprints202311.1713.v1
Chicago/Turabian Style
Cheng, S., Jianxing Yu and Zhenglong Yang. 2023 "Analysis of Motion Mechanism and Steel Catenary Riser Failure Probability of the Semi-submersible Platform under the Mooring Line Failure" Preprints. https://doi.org/10.20944/preprints202311.1713.v1
Abstract
With the global warming and the frequent occurrences of harsh environments, mooring line failures are frequent. Response analysis of the platform structure and its residual mooring system under multiple mooring line failures is needed. Therefore, it is necessary to investigate the change law of platform motion response after mooring line failure to find out the reasons for the change. Studies for different failure combinations of mooring lines show that the variation of the steady-state equilibrium position of the platform is closely related to the stiffness, with a clear functional. The duration and amplitude of the transient response are mainly influenced by the Morison drag force. And it was found that the suspended mooring line reduced the motion responses. It is also found that the mooring line failure increased the effective tension and suspension length of the riser. Based on the improved Dezert-Smarandache theory (DSmT), it is calculated that mooring line failure has little effect on the failure probability in different zones of the riser.
Keywords
mooring line failure; failure combinations; Dezert-Smarandache theory; failure probability.
Subject
Engineering, Marine Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
