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Lookup NU author(s): Professor Zhiqiang Hu, Dr Xiangyin Meng
This is the of an article that has been published in its final definitive form by Taylor and Francis Ltd, 2019.
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© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group. This paper addresses an investigation of ice constitutive laws modeling with strain rate, temperature and confining pressure effects of interest in modeling ice compressive behaviour. For the proposed phenomenological model consisting of elastic, delayed elastic and viscous components, strain rate is taken into account by introducing a viscous term based on Glen’s law. The effects of temperature and confining pressure are also included in the ice model. With the consideration that the viscous term and delayed elastic term are affected by temperature, the pressure hardening and pressure softening phenomena are embedded in the constitutive model. The proposed three-dimensional constitutive model is implemented in explicit LS-DYNA as a user-defined material model, and the numerical simulations of constant strain rate and creep experiments are conducted to verify the proposed ice material model. Ice strength and strain-time curves at different strain rates, temperatures and confining pressures are obtained and compared with experimental results.
Author(s): Xu Y, Hu Z, Ringsberg JW, Chen G, Meng X
Publication type: Article
Publication status: Published
Journal: Ships and Offshore Structures
Year: 2019
Volume: 14
Issue: Suppl 1
Pages: 34-44
Online publication date: 05/12/2018
Acceptance date: 25/11/2018
Date deposited: 12/02/2019
ISSN (print): 1744-5302
ISSN (electronic): 1754-212X
Publisher: Taylor and Francis Ltd
URL: https://doi.org/10.1080/17445302.2018.1553134
DOI: 10.1080/17445302.2018.1553134
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