Analysis of TLP dynamic responses under tendon breakage

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (14) : 251-259.

LIU Weixing1，LIU Lei1， WU Haitao2， CUI Lin3， WANG Xin1， ZHANG Zhiyang1

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Abstract

The dynamic behavior of a tension leg platform (TLP) under different damaged mooring conditions is studied. A fully-coupled numerical tool ANSYS/AQWA is used to develop a nonlinear hull-tendon model, and an effective method for simulating tendon failure is proposed. The transient effects of tendon breakage, the transient responses of the platform for simultaneous and progressive tendon failure, and the performance changes of the platform after tendon failure are studied. The results show that, first, tendon breakage can lead to transient overshoots of the platform; Second, the transient responses caused by simultaneous tendon failure are more significant than those for progressive tendon failure; Third, the performance of the platform has a significant change after tendon failure. Therefore, the effects of tendon breakage on the dynamic response of the platform should be examined in advance to prevent the safety of the platform from being threatened.

Key words

tension leg platform (TLP) / tendon breakage / transient effects / transient overshoot / fully-coupled dynamic analysis

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LIU Weixing1，LIU Lei1， WU Haitao2， CUI Lin3， WANG Xin1， ZHANG Zhiyang1. Analysis of TLP dynamic responses under tendon breakage[J]. Journal of Vibration and Shock, 2023, 42(14): 251-259

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