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Parameter calculation of viscous damper applied in the truncated model test gesign of a deepwater semi-submersible platform

  • Dongsheng Qiao*
  • , Jinping Ou
  • *Corresponding author for this work
  • School of Civil Engineering, Harbin Institute of Technology
  • Dalian University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the equivalent water depth truncated model test design of a deepwater semi-submersible platform, the viscous damper is designed to simulate the contribution of mooring damping to total damping of floating platform. The dissipated energy by a mooring line from the floating platform as a result of its oscillation is applied to calculate the mooring-induced damping. The mooring line and seabed interaction is based on the hypothesis of rigid seabed. The fluid drag force and inertia force on the mooring line are calculated according to the Morrison formula. The non-liner dynamic analysis of mooring line is executed in the time domain based on the finite element method. The mooring induced damping is obtained from the results. The value difference of mooring induced damping between the truncated and full-depth mooring line is linearized to provide parameter for the design of viscous damper.

Original languageEnglish
Title of host publicationAdvances in Building Materials
Pages1480-1485
Number of pages6
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 International Conference on Structures and Building Materials, ICSBM 2011 - Guangzhou, China
Duration: 7 Jan 20119 Jan 2011

Publication series

NameAdvanced Materials Research
Volume168-170
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Structures and Building Materials, ICSBM 2011
Country/TerritoryChina
CityGuangzhou
Period7/01/119/01/11

Keywords

  • Dynamic analysis
  • Mooring-induced damping
  • Parameter calculation
  • Truncated model test
  • Viscous damper

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