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Energies 2015, 8(1), 111-132; doi:10.3390/en8010111

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

Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
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Author to whom correspondence should be addressed.
Academic Editor: Jens Peter Kofoed
Received: 28 September 2014 / Accepted: 11 December 2014 / Published: 25 December 2014
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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. View Full-Text
Keywords: novel S-shaped TLCD; deep-sea floating platforms; motion suppression; sensitivity analysis novel S-shaped TLCD; deep-sea floating platforms; motion suppression; sensitivity analysis
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. (CC BY 4.0).

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MDPI and ACS Style

Zeng, X.; Yu, Y.; Zhang, L.; Liu, Q.; Wu, H. A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms. Energies 2015, 8, 111-132.

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