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

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

14 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
PublisherLuleå University of Technology
Pages845-854
Number of pages10
Volume2
ISBN (Print)978-161567800-6
Publication statusPublished - 2009
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

NamePOAC Proceedings
PublisherPOAC
ISSN (Print)0376-6756

Conference

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

Fingerprint

Ice
Continuum damage mechanics
Cracks
Failure modes
Numerical analysis
Conservation
Geometry

Keywords

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

Cite this

Kolari, K., Kuutti, J., & Kurkela, J. (2009). 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 (Vol. 2, pp. 845-854). Luleå University of Technology. POAC Proceedings
Kolari, Kari ; Kuutti, Juha ; Kurkela, Juha. / FE-simulation of continuous ice failure based on model update technique. Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions. Vol. 2 Luleå University of Technology, 2009. pp. 845-854 (POAC Proceedings).
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Kolari, K, Kuutti, J & Kurkela, J 2009, 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. vol. 2, Luleå University of Technology, POAC Proceedings, pp. 845-854, 20th International Conference on Port and Ocean Engineering under Arctic Conditions, POAC 2009, Luleå, Sweden, 9/06/09.

FE-simulation of continuous ice failure based on model update technique. / Kolari, Kari; Kuutti, Juha; Kurkela, Juha.

Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions. Vol. 2 Luleå University of Technology, 2009. p. 845-854 (POAC Proceedings).

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

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AB - 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.

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Kolari K, Kuutti J, Kurkela J. 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. Vol. 2. Luleå University of Technology. 2009. p. 845-854. (POAC Proceedings).