A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms

Xiaohui Zeng, Yang Yu, Liang Zhang, Qingquan Liu and Han Wu
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Xiaohui Zeng: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Yang Yu: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Liang Zhang: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Qingquan Liu: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Han Wu: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Energies, 2014, vol. 8, issue 1, 1-22

Abstract: Deep-sea floating platforms are one of the most important large structures for ocean energy exploitation. A new energy-absorbing device named S-shaped Tuned Liquid Column Damper (TLCD) has been invented for the suppression of the horizontal motion and vertical in-plane rotation of a deep-sea floating platform. A conventional tuned liquid column damper has a U-shaped water tunnel to absorb the excessive energy of the main structure. The application of U-shaped dampers in deep-sea floating platforms is difficult due to the restriction of a large horizontal length. A novel S-shaped damper is proposed to retain the same amount of liquid using a shorter S-shaped tunnel. Theoretical and experimental works are conducted and prove that an S-shaped damper needs less than half the horizontal length to provide the same suppression as a U-shaped damper. A coupling calculation model is proposed and followed by the sensitivity analysis. The study demonstrates the applicability of the novel S-shaped damper for the motion suppression in deep-sea floating platforms.

Keywords: novel S-shaped TLCD; deep-sea floating platforms; motion suppression; sensitivity analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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