The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions
Submarine slope instability may be triggered by earthquakes and tsunamis. Methane hydrate sediments (MHS) are commonly buried under submarine slopes. Submarine slides would probably be triggered once the MHS are damaged under cyclic loading conditions. For this reason, it is essential to research th...
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ftdoajarticles:oai:doaj.org/article:f2fc6670ddaf4ba7a030866149f20413 2023-05-15T17:11:39+02:00 The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions Dong Wang Bin Gong Yujing Jiang 2019-09-01T00:00:00Z https://doi.org/10.3390/en12193694 https://doaj.org/article/f2fc6670ddaf4ba7a030866149f20413 EN eng MDPI AG https://www.mdpi.com/1996-1073/12/19/3694 https://doaj.org/toc/1996-1073 1996-1073 doi:10.3390/en12193694 https://doaj.org/article/f2fc6670ddaf4ba7a030866149f20413 Energies, Vol 12, Iss 19, p 3694 (2019) methane hydrate sediments (mhs) distinct element method (dem) mechanical behavior cyclic loading Technology T article 2019 ftdoajarticles https://doi.org/10.3390/en12193694 2022-12-30T20:01:46Z Submarine slope instability may be triggered by earthquakes and tsunamis. Methane hydrate sediments (MHS) are commonly buried under submarine slopes. Submarine slides would probably be triggered once the MHS are damaged under cyclic loading conditions. For this reason, it is essential to research the mechanical response of MHSs under dynamic loading conditions. In this study, a series of drained cyclic biaxial compressive tests with constant stress amplitudes were numerically carried out with the distinct element method (DEM). The cyclic loading number decreased as the hydrate saturation ( S h ) increased when the MHS were damaged. The failure mode of the MHS was shown to be dependent on the dynamic stress amplitude and hydrate saturation. The microstructure of MHS during the cyclic loading shear process was also analyzed. The results can help us to understand the mechanical behavior of MHS during the cyclic loading process and develop micromechanical-based constitutive models. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Energies 12 19 3694 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
methane hydrate sediments (mhs) distinct element method (dem) mechanical behavior cyclic loading Technology T |
spellingShingle |
methane hydrate sediments (mhs) distinct element method (dem) mechanical behavior cyclic loading Technology T Dong Wang Bin Gong Yujing Jiang The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
topic_facet |
methane hydrate sediments (mhs) distinct element method (dem) mechanical behavior cyclic loading Technology T |
description |
Submarine slope instability may be triggered by earthquakes and tsunamis. Methane hydrate sediments (MHS) are commonly buried under submarine slopes. Submarine slides would probably be triggered once the MHS are damaged under cyclic loading conditions. For this reason, it is essential to research the mechanical response of MHSs under dynamic loading conditions. In this study, a series of drained cyclic biaxial compressive tests with constant stress amplitudes were numerically carried out with the distinct element method (DEM). The cyclic loading number decreased as the hydrate saturation ( S h ) increased when the MHS were damaged. The failure mode of the MHS was shown to be dependent on the dynamic stress amplitude and hydrate saturation. The microstructure of MHS during the cyclic loading shear process was also analyzed. The results can help us to understand the mechanical behavior of MHS during the cyclic loading process and develop micromechanical-based constitutive models. |
format |
Article in Journal/Newspaper |
author |
Dong Wang Bin Gong Yujing Jiang |
author_facet |
Dong Wang Bin Gong Yujing Jiang |
author_sort |
Dong Wang |
title |
The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
title_short |
The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
title_full |
The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
title_fullStr |
The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
title_full_unstemmed |
The Distinct Elemental Analysis of the Microstructural Evolution of a Methane Hydrate Specimen under Cyclic Loading Conditions |
title_sort |
distinct elemental analysis of the microstructural evolution of a methane hydrate specimen under cyclic loading conditions |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/en12193694 https://doaj.org/article/f2fc6670ddaf4ba7a030866149f20413 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Energies, Vol 12, Iss 19, p 3694 (2019) |
op_relation |
https://www.mdpi.com/1996-1073/12/19/3694 https://doaj.org/toc/1996-1073 1996-1073 doi:10.3390/en12193694 https://doaj.org/article/f2fc6670ddaf4ba7a030866149f20413 |
op_doi |
https://doi.org/10.3390/en12193694 |
container_title |
Energies |
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12 |
container_issue |
19 |
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3694 |
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1766068428900139008 |