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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.
Author(s): Xu Y, Wu J, Li P, Kujala P, Hu Z, Chen G
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
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
ePrints DOI: 10.57711/9z6b-vq34
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