### Abstract

Original language | English |
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Title of host publication | Proceedings of 20th IAHR International Symposium on Ice |

Publisher | University of Helsinki |

Pages | 365-376 |

Volume | 1 |

ISBN (Print) | 978-9-5210-5979-7, 978-1-6299-3395-5 |

Publication status | Published - 2010 |

MoE publication type | A4 Article in a conference publication |

Event | 20th IAHR International Symposium on Ice 2010 - Lahti, Finland Duration: 14 Jun 2010 → 17 Jun 2010 |

### Conference

Conference | 20th IAHR International Symposium on Ice 2010 |
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Country | Finland |

City | Lahti |

Period | 14/06/10 → 17/06/10 |

### Fingerprint

### Cite this

*Proceedings of 20th IAHR International Symposium on Ice*(Vol. 1, pp. 365-376). University of Helsinki.

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*Proceedings of 20th IAHR International Symposium on Ice .*vol. 1, University of Helsinki, pp. 365-376, 20th IAHR International Symposium on Ice 2010, Lahti, Finland, 14/06/10.

**Simulation of ice crushing experiment using FE-model update technique.** / Kuutti, Juha; Kolari, Kari.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Simulation of ice crushing experiment using FE-model update technique

AU - Kuutti, Juha

AU - Kolari, Kari

PY - 2010

Y1 - 2010

N2 - The numerical modeling of continuous failure process in ice-structure interaction FE-analyses is a big challenge. Conventional methods such as element erosion to model crack propagation or material failure are not satisfactory in modeling true failure process of brittle material. Using more sophisticated approach to failure modeling, numerical analysis is able to take account explicit material failure and analysis can be continued after crack propagation without violating balance laws of mechanics. An advanced approach for the modeling of ice-structure interaction is presented in this paper. In the proposed approach material behavior and brittle failure is modeled using continuum damage mechanics (CDM). Crack propagation path prediction is obtained from the CDM model and a model update technique is utilized to propagate the crack explicitly in the mesh. Explicit cracks are created in the mesh by splitting the damaged elements based on the internal crack born inside the element. The crack propagation process is modeled by dividing the analysis into segments and updating the model between the segments. Material failure controls the segments so that model is updated after each crack propagation segment. This approach allows analysis continuation after complete failure and the creation of separate segments yielding to e.g. material separation or pileup. In this paper a laboratory-scale ice block crushing experiment is simulated using the presented approach.

AB - The numerical modeling of continuous failure process in ice-structure interaction FE-analyses is a big challenge. Conventional methods such as element erosion to model crack propagation or material failure are not satisfactory in modeling true failure process of brittle material. Using more sophisticated approach to failure modeling, numerical analysis is able to take account explicit material failure and analysis can be continued after crack propagation without violating balance laws of mechanics. An advanced approach for the modeling of ice-structure interaction is presented in this paper. In the proposed approach material behavior and brittle failure is modeled using continuum damage mechanics (CDM). Crack propagation path prediction is obtained from the CDM model and a model update technique is utilized to propagate the crack explicitly in the mesh. Explicit cracks are created in the mesh by splitting the damaged elements based on the internal crack born inside the element. The crack propagation process is modeled by dividing the analysis into segments and updating the model between the segments. Material failure controls the segments so that model is updated after each crack propagation segment. This approach allows analysis continuation after complete failure and the creation of separate segments yielding to e.g. material separation or pileup. In this paper a laboratory-scale ice block crushing experiment is simulated using the presented approach.

M3 - Conference article in proceedings

SN - 978-9-5210-5979-7

SN - 978-1-6299-3395-5

VL - 1

SP - 365

EP - 376

BT - Proceedings of 20th IAHR International Symposium on Ice

PB - University of Helsinki

ER -