FE-simulation of continuous ice failure based on model update technique

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

    16 Citations (Scopus)

    Abstract

    One of the greatest challenges in the FE analysis of ice-structure interaction is the modelling the failure of ice itself and the continuous failure process during the interaction. FE analysis is often cancelled after complete material failure has occurred or completely failed elements are deleted from the model and analysis is continued after the deletion. Neither of the approaches described above is satisfactory. Using advanced methods, analysis can be continued after complete material failure and failed sections can be retained in the model without violating the law of conservation of mass. In this paper a new approach for the modelling of interaction is proposed. In the approach the failure of material is modelled with anisotropic continuum damage mechanics (CDM) model. The failure mode is assumed to be brittle. The CDM model is used to predict direction of a crack evolution while the proposed model update technique is applied to propagate the crack in FE geometry. In detail, numerical analysis is divided into segments. Explicit cracks are created in the model between segments based on the prediction given by the CDM model. The approach enables analysis to continue after significant cracking and e.g. the pileup of ice can be simulated. The proposed approach has been applied in the simulation of tensile test and interaction of conical structure and level ice.
    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2009
    PublisherCurran Associates Inc.
    Pages845-854
    Number of pages10
    Volume2
    ISBN (Print)978-161567800-6
    Publication statusPublished - 2010
    MoE publication typeA4 Article in a conference publication
    Event20th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2009 - Luleå, Sweden
    Duration: 9 Jun 200912 Jun 2009
    Conference number: 20

    Publication series

    SeriesPOAC Proceedings
    ISSN0376-6756

    Conference

    Conference20th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2009
    Abbreviated titlePOAC 2009
    CountrySweden
    CityLuleå
    Period9/06/0912/06/09

    Keywords

    • continuum damage mechanics
    • cracks
    • ocean engineering
    • offshore structures
    • tensile testing

    Fingerprint Dive into the research topics of 'FE-simulation of continuous ice failure based on model update technique'. Together they form a unique fingerprint.

  • Cite this

    Kolari, K., Kuutti, J., & Kurkela, J. (2010). FE-simulation of continuous ice failure based on model update technique. In Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2009 (Vol. 2, pp. 845-854). Curran Associates Inc.. POAC Proceedings http://www.poac.com/PapersOnline.html