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Investigation of the fracture mechanism of level ice with extended finite element method

Lookup NU author(s): Professor Zhiqiang Hu



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


This paper investigates the fracture mechanism of level ice based on the extended finite element method by simulatingcollision scenarios between ice and a rigid ship structure. It is found the collision velocity and structure inclinationaffect the fracture mode through changing the deformation and stress distribution of the level ice. Theoverall response of the level ice is simulated with the transversely isotropic material model and cohesive zonemodel. The numerical model is verified with the data from a field test, which shows that the obtained ice loadand size of the broken ices from numerical method are well consistent with the tested data. Two fracture modesof the level ice, bending and splitting, appear in the simulated cases. The bending crack is found to emerge fromthe top surface of the level ice and expand along the circumferential direction, and the splitting crack initiates atthe bottom edge of the level ice and expands along the radial direction. Deformation and multiple stresses oflevel ice are analyzed, showing that the initial cracks for both fracture modes are related to the local tensile failure,and the location of the maximum tensile hydrostatic stress always coincides with the initial crack.

Publication metadata

Author(s): Xu Y, Wu J, Li P, Kujala P, Hu Z, Chen G

Publication type: Article

Publication status: Published

Journal: Ocean Engineering

Year: 2022

Volume: 260

Print publication date: 15/09/2022

Online publication date: 03/08/2022

Acceptance date: 16/07/2022

Date deposited: 24/07/2022

ISSN (print): 0029-8018

ISSN (electronic): 1873-5258

Publisher: Elsevier


DOI: 10.1016/j.oceaneng.2022.112048

ePrints DOI: 10.57711/9z6b-vq34


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Funder referenceFunder name
Open Fund Project of State Key Laboratoty of Ocean Engineering