Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA
The multi-surface failure criterion/model for ice is implemented into an explicit finite element program called LS-DYNA (www.lstc.com). The implementation of the model equations was achieved via the development of a user routine for LS-DYNA. Since ice behavior depends on temperature, strain/load rat...
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Curran Associates
2009
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:23005001 2023-05-15T14:22:27+02:00 Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA Wang, J. Derradji-Aouat, A. 2009-06 text https://nrc-publications.canada.ca/eng/view/object/?id=f783fe0b-7f9c-4f21-a1f3-0700946d6e2c https://nrc-publications.canada.ca/fra/voir/objet/?id=f783fe0b-7f9c-4f21-a1f3-0700946d6e2c eng eng Curran Associates issn:0376-6756 Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC. Volume 2, 20th International Conference on Port and Ocean Engineering under Arctic Conditions 2009, POAC 2009, 9 June 9-12, 2009, Lulea, Sweden, ISBN: 978-161567800-6, Publication date: 2009-06, Pages: 903–912 article 2009 ftnrccanada 2021-09-01T06:23:18Z The multi-surface failure criterion/model for ice is implemented into an explicit finite element program called LS-DYNA (www.lstc.com). The implementation of the model equations was achieved via the development of a user routine for LS-DYNA. Since ice behavior depends on temperature, strain/load rate and loading direction (loading direction for the case of anisotropic ice), the traditional isotropic and temperature and rate independent failure criterion such as von- Mises and Mohr-Coulomb are not applicable. The multi-surface failure criterion (Derradji-Aouat, 2003) accounts for those effects and is formulated with the parameters of the octahedral shear stress and hydrostatic pressure. In this paper, a 3-step procedure will be presented and discussed to demonstrate successful multisurface failure model implementation in explicit FEA. Step 1 is concerned with the theoretical implementation of the ice multi-surface failure model into the explicit commercial code LSDYNA. Step 2 deals with verification and validation of the FE implementation, this step may be called V&V analysis and its rooted in uncertainty methodologies and statistical analyses. V&V will be based on comparisons between the numerical results and the results from the ice compression tests done by Rist and Murrell (1994) which was one of the data sources for the present failure criterion. Step 3 deals with showing how the implemented model in LS-DYNA predicts actual ice pressure and indentation tests on an ice block using the MTS machine in the cold room (Wells et al., 2008) and are simulated as an example. Discussion regarding the multisurface model, its implementation, numerical results, and model predictions are presented. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Arctic National Research Council Canada: NRC Publications Archive |
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Open Polar |
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National Research Council Canada: NRC Publications Archive |
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ftnrccanada |
language |
English |
description |
The multi-surface failure criterion/model for ice is implemented into an explicit finite element program called LS-DYNA (www.lstc.com). The implementation of the model equations was achieved via the development of a user routine for LS-DYNA. Since ice behavior depends on temperature, strain/load rate and loading direction (loading direction for the case of anisotropic ice), the traditional isotropic and temperature and rate independent failure criterion such as von- Mises and Mohr-Coulomb are not applicable. The multi-surface failure criterion (Derradji-Aouat, 2003) accounts for those effects and is formulated with the parameters of the octahedral shear stress and hydrostatic pressure. In this paper, a 3-step procedure will be presented and discussed to demonstrate successful multisurface failure model implementation in explicit FEA. Step 1 is concerned with the theoretical implementation of the ice multi-surface failure model into the explicit commercial code LSDYNA. Step 2 deals with verification and validation of the FE implementation, this step may be called V&V analysis and its rooted in uncertainty methodologies and statistical analyses. V&V will be based on comparisons between the numerical results and the results from the ice compression tests done by Rist and Murrell (1994) which was one of the data sources for the present failure criterion. Step 3 deals with showing how the implemented model in LS-DYNA predicts actual ice pressure and indentation tests on an ice block using the MTS machine in the cold room (Wells et al., 2008) and are simulated as an example. Discussion regarding the multisurface model, its implementation, numerical results, and model predictions are presented. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Wang, J. Derradji-Aouat, A. |
spellingShingle |
Wang, J. Derradji-Aouat, A. Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
author_facet |
Wang, J. Derradji-Aouat, A. |
author_sort |
Wang, J. |
title |
Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
title_short |
Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
title_full |
Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
title_fullStr |
Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
title_full_unstemmed |
Implementation, verification and validation of the multi-surface failure envelope for ice in explicit FEA |
title_sort |
implementation, verification and validation of the multi-surface failure envelope for ice in explicit fea |
publisher |
Curran Associates |
publishDate |
2009 |
url |
https://nrc-publications.canada.ca/eng/view/object/?id=f783fe0b-7f9c-4f21-a1f3-0700946d6e2c https://nrc-publications.canada.ca/fra/voir/objet/?id=f783fe0b-7f9c-4f21-a1f3-0700946d6e2c |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
issn:0376-6756 Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC. Volume 2, 20th International Conference on Port and Ocean Engineering under Arctic Conditions 2009, POAC 2009, 9 June 9-12, 2009, Lulea, Sweden, ISBN: 978-161567800-6, Publication date: 2009-06, Pages: 903–912 |
_version_ |
1766295036221194240 |