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Derivation of a numerical propeller-ice interaction model
Citation Link: https://doi.org/10.15480/882.9367
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
TORE-DOI
Start Page
199
End Page
207
Citation
8th International Symposium on Marine Propulsors (smp 2024)
Contribution to Conference
Publisher
Norwegian University of Science and Technology, Department of Marine Technology
ISSN
2414-6129
ISBN
978-82-691120-5-4
Peer Reviewed
true
Ice is a strain rate-dependent material showing ductile and brittle behavior and can play a critical role in maritime operations. Particularly in propeller-ice interactions, with high strain rates, ice fails brittle. Such interactions not only induce potential damage to the propeller, but also have a significant impact on the entire drive train of vessels in ice. The determination of ice-induced loads on propellers is a significant challenge, as direct measurements are usually not possible and indirect measurements are contaminated and superimposed with various other signals.
Therefore, this paper delves into the domain of dynamic finite element simulations focusing on the interaction between ice and ship propellers in connection with dedicated small scale experiments.
Experiments emulating propeller-ice milling-type interactions have been employed to enhance the knowledge of propeller-ice interaction and ice as a material. These experiments serve as input to refine the numerical model, which is a state-of-the-art Mohr-Coulomb Nodal Split (MCNS) ice material model.
The aim is to determine the ice loading on the propeller numerically and to compare the experimental results with the simulation. These simulations in combination with the experiments provide insight into complex propeller-ice dynamics and enable investigating the applicability of the MCNS model for propeller-ice simulations. The discussion includes the observed phenomena, emphasizing the propagation of brittle fractures and their effects on the propeller.
In summary, this study comprehensively explores propeller-ice interactions through finite element simulations. This research contributes to the understanding of ice-induced mechanical challenges in the maritime realm by considering the brittle behavior of ice.
Therefore, this paper delves into the domain of dynamic finite element simulations focusing on the interaction between ice and ship propellers in connection with dedicated small scale experiments.
Experiments emulating propeller-ice milling-type interactions have been employed to enhance the knowledge of propeller-ice interaction and ice as a material. These experiments serve as input to refine the numerical model, which is a state-of-the-art Mohr-Coulomb Nodal Split (MCNS) ice material model.
The aim is to determine the ice loading on the propeller numerically and to compare the experimental results with the simulation. These simulations in combination with the experiments provide insight into complex propeller-ice dynamics and enable investigating the applicability of the MCNS model for propeller-ice simulations. The discussion includes the observed phenomena, emphasizing the propagation of brittle fractures and their effects on the propeller.
In summary, this study comprehensively explores propeller-ice interactions through finite element simulations. This research contributes to the understanding of ice-induced mechanical challenges in the maritime realm by considering the brittle behavior of ice.
Subjects
propeller-ice interaction
finite element simulations
brittle behavior
maritime operations
ice material model
DDC Class
620: Engineering
Publication version
publishedVersion
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Bohm-DerivationOfANumericalPropellericeInteractionModel-1196-1-final.pdf
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Main Article
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