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

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Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Academic Editor: Jens Peter Kofoed
Energies 2015, 8(1), 111-132; https://doi.org/10.3390/en8010111
Received: 28 September 2014 / Accepted: 11 December 2014 / Published: 25 December 2014
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
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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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