Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates
With the expansion of the Arctic route, the safety of ship crossing the area in light of the low temperature and ice has become of focus, especially with regards to the ship’s structure. The mechanical properties of the material making up the ship’s structure may not be suitable for the Arctic envir...
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Online Access: | https://doi.org/10.3390/jmse11030678 |
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ftmdpi:oai:mdpi.com:/2077-1312/11/3/678/ 2023-08-20T04:04:12+02:00 Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates Jing Zhang Xuelei Kang Xinghua Shi C. Guedes Soares Ming Song agris 2023-03-22 application/pdf https://doi.org/10.3390/jmse11030678 EN eng Multidisciplinary Digital Publishing Institute Ocean Engineering https://dx.doi.org/10.3390/jmse11030678 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 11; Issue 3; Pages: 678 constitutive model low temperature cowper-symonds strain rate dynamic behaviour Text 2023 ftmdpi https://doi.org/10.3390/jmse11030678 2023-08-01T09:23:21Z With the expansion of the Arctic route, the safety of ship crossing the area in light of the low temperature and ice has become of focus, especially with regards to the ship’s structure. The mechanical properties of the material making up the ship’s structure may not be suitable for the Arctic environment. A series of quasi-static and dynamic tests were performed to investigate the behaviour of EH36 steel, which is used to build Arctic ships, at temperatures ranging from 20 °C to −60 °C. The yield and ultimate tensile stress increased more than 10% as the temperature decreased from 20 °C to −60 °C, whereas the toughness decreased as the temperature decreased. A formula was derived to illustrate the relationship between the temperature reduction and the yield strength by fitting the experimental data. Four common constitutive rigid-perfectly plastic, elastic-perfectly plastic, bilinear elastic-plastic, and multi-linear elastic plastic models were fitted to simulate the hull structure under static loading and low temperature. Additionally, the strain rate effect of EH36 steel at low temperatures was illustrated by quasi-static and high-speed impact tests. A constitutive model including the low temperature and strain rate was introduced based on a modified Cowper-Symonds model, in which the coefficients of the constitutive model are fitted by the test results. It is improved by an iterative numerical method used to obtain more accurate coefficients using a series of numerical analyses. Detailed finite element simulations of the experiment conditions revealed that the constitutive model accurately predicts the dynamic response at low temperatures. Text Arctic MDPI Open Access Publishing Arctic Journal of Marine Science and Engineering 11 3 678 |
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Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
constitutive model low temperature cowper-symonds strain rate dynamic behaviour |
spellingShingle |
constitutive model low temperature cowper-symonds strain rate dynamic behaviour Jing Zhang Xuelei Kang Xinghua Shi C. Guedes Soares Ming Song Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
topic_facet |
constitutive model low temperature cowper-symonds strain rate dynamic behaviour |
description |
With the expansion of the Arctic route, the safety of ship crossing the area in light of the low temperature and ice has become of focus, especially with regards to the ship’s structure. The mechanical properties of the material making up the ship’s structure may not be suitable for the Arctic environment. A series of quasi-static and dynamic tests were performed to investigate the behaviour of EH36 steel, which is used to build Arctic ships, at temperatures ranging from 20 °C to −60 °C. The yield and ultimate tensile stress increased more than 10% as the temperature decreased from 20 °C to −60 °C, whereas the toughness decreased as the temperature decreased. A formula was derived to illustrate the relationship between the temperature reduction and the yield strength by fitting the experimental data. Four common constitutive rigid-perfectly plastic, elastic-perfectly plastic, bilinear elastic-plastic, and multi-linear elastic plastic models were fitted to simulate the hull structure under static loading and low temperature. Additionally, the strain rate effect of EH36 steel at low temperatures was illustrated by quasi-static and high-speed impact tests. A constitutive model including the low temperature and strain rate was introduced based on a modified Cowper-Symonds model, in which the coefficients of the constitutive model are fitted by the test results. It is improved by an iterative numerical method used to obtain more accurate coefficients using a series of numerical analyses. Detailed finite element simulations of the experiment conditions revealed that the constitutive model accurately predicts the dynamic response at low temperatures. |
format |
Text |
author |
Jing Zhang Xuelei Kang Xinghua Shi C. Guedes Soares Ming Song |
author_facet |
Jing Zhang Xuelei Kang Xinghua Shi C. Guedes Soares Ming Song |
author_sort |
Jing Zhang |
title |
Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
title_short |
Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
title_full |
Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
title_fullStr |
Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
title_full_unstemmed |
Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates |
title_sort |
low temperature effect on the mechanical properties of eh36 with strain rates |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/jmse11030678 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Marine Science and Engineering; Volume 11; Issue 3; Pages: 678 |
op_relation |
Ocean Engineering https://dx.doi.org/10.3390/jmse11030678 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse11030678 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
container_issue |
3 |
container_start_page |
678 |
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1774714604927057920 |