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A method for real-time estimation of full-scale global ice loads on floating structures
Number of Authors: 4
Responsible organisation
2018 (English)In: Cold Regions Science and Technology, ISSN 0165-232X, E-ISSN 1872-7441, Vol. 156, p. 44-60Article in journal (Refereed) Published
Abstract [en]

This paper proposes an algorithm that uses conventional measurements found on-board ships coupled with additional Inertial Measurement Units to estimate the motions and global loads acting on them. The work is motivated by the scarce availability of full-scale load data for sea-ice operations and by the invasive instrumentation of strain gauges used to obtain global loads of all degrees of freedom. Full-scale data are key to a number of design, operational, and research aspects related to sea-ice operations. The proposed algorithm is based on four Inertial Measurement Units (IMUs) that together with position and heading measurements are used to make estimates of dynamic linear and rotational acceleration (acceleration resulting in motion). We show how to use models updated with propulsion and wind measurements to estimate propulsion, hydrodynamic, wind, and ice loads through a setup catering to real-time implementation. A case study with the Swedish icebreaker Oden is presented and discussed. The algorithm effectively yields reasonable ice load history estimations and presents great potential in its further application to real-time global ice load estimations.

Place, publisher, year, edition, pages
2018. Vol. 156, p. 44-60
Keywords [en]
Global ice load, Inertial Measurement Units (IMUs), Accelerometers, Floating structure, Arctic technology, Ocean engineering, Icebreaker Oden
National Category
Engineering and Technology
Research subject
SWEDARCTIC 2015, OATRC 2015
Identifiers
URN: urn:nbn:se:polar:diva-8412DOI: 10.1016/j.coldregions.2018.03.012OAI: oai:DiVA.org:polar-8412DiVA, id: diva2:1417152
Note

OATRC2015

Available from: 2020-03-26 Created: 2020-03-26 Last updated: 2020-03-26

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0165232X17306018
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  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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