Investigation of the complex dynamics of float-over deck installation based on a coupled heave-roll-pitch impact model

This paper describes an efficient methodology for analysing the dynamics of float-over deck installation, particularly arising from the wave-induced impacts between multiple structures. A coupled heave-roll-pitch impact model is developed in the time-domain to analyse the complex impact behaviour associated with float-over deck installations. The resulting time-domain model is very efficient since the time-consuming convolution terms are replaced by state-space models. The shock absorbers known as Leg Mating Units (LMUs) at the deck-to-substructure (DTS) connections, and Deck Support Units (DSUs) at the deck-to-barge (DTB) connections, are modelled as spring-damper systems with limited load capacities. By considering the coupled heave-roll-pitch motions of the float-over system, the resulting impact model is applied to analyse the complex vertical interactions between the deck and barge and between the deck and substructure at both the 0% and 100% load transfer stages. LMU/DSU impacts and DTS/DTB impacts are analysed here. In addition, the effects of varying wave excitations are investigated based on the coupled impact model.

• Record URL:
  https://doi.org/10.1016/j.oceaneng.2017.04.007
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0029801817301841
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Chen, Mingsheng
  • Taylor, Rodney Eatock
  • Choo, Yoo Sang
• Publication Date: 2017-6-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 262-275
• Serial:
  • Ocean Engineering
  • Volume: 137
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Barges; Decks (Ships); Excitation; Heaving (Ship motion); Hydrodynamics; Impact loads; Mathematical models; Pitch (Dynamics); Rolling; Time domain analysis
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 01635375
• Record Type: Publication
• Files: TRIS
• Created Date: May 10 2017 4:55PM