Distinct creep regimes of methane hydrates predicted by a monatomic water model
The power-law creep properties of methane hydrates were measured experimentally two decades ago, but their microscopic explanation is still missing. Here we show, using molecular dynamics simulations spanning almost 2 orders of magnitude of stresses and 3 orders of magnitude of strain rates, that su...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.L012007 |
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| _version_ | 1841551886709161984 |
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| author | Henrik Andersen Sveinsson Pinqiang Cao |
| author_facet | Henrik Andersen Sveinsson Pinqiang Cao |
| author_sort | Henrik Andersen Sveinsson |
| collection | DOAJ |
| description | The power-law creep properties of methane hydrates were measured experimentally two decades ago, but their microscopic explanation is still missing. Here we show, using molecular dynamics simulations spanning almost 2 orders of magnitude of stresses and 3 orders of magnitude of strain rates, that such power-law creep emerges in molecular dynamics simulations of polycrystalline methane hydrates using a monatomic water model, suggesting that only simplified molecular interactions and the concept of a hydrate polycrystal are needed for such power-law creep behavior to emerge. Damage patterns post-creep suggest that hydrates are strong because damage only occurs on crystal surfaces. |
| format | Article |
| id | doaj-art-ad89f2751e7a4946b972b49b00d99611 |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-ad89f2751e7a4946b972b49b00d996112025-01-09T15:03:01ZengAmerican Physical SocietyPhysical Review Research2643-15642025-01-0171L01200710.1103/PhysRevResearch.7.L012007Distinct creep regimes of methane hydrates predicted by a monatomic water modelHenrik Andersen SveinssonPinqiang CaoThe power-law creep properties of methane hydrates were measured experimentally two decades ago, but their microscopic explanation is still missing. Here we show, using molecular dynamics simulations spanning almost 2 orders of magnitude of stresses and 3 orders of magnitude of strain rates, that such power-law creep emerges in molecular dynamics simulations of polycrystalline methane hydrates using a monatomic water model, suggesting that only simplified molecular interactions and the concept of a hydrate polycrystal are needed for such power-law creep behavior to emerge. Damage patterns post-creep suggest that hydrates are strong because damage only occurs on crystal surfaces.http://doi.org/10.1103/PhysRevResearch.7.L012007 |
| spellingShingle | Henrik Andersen Sveinsson Pinqiang Cao Distinct creep regimes of methane hydrates predicted by a monatomic water model Physical Review Research |
| title | Distinct creep regimes of methane hydrates predicted by a monatomic water model |
| title_full | Distinct creep regimes of methane hydrates predicted by a monatomic water model |
| title_fullStr | Distinct creep regimes of methane hydrates predicted by a monatomic water model |
| title_full_unstemmed | Distinct creep regimes of methane hydrates predicted by a monatomic water model |
| title_short | Distinct creep regimes of methane hydrates predicted by a monatomic water model |
| title_sort | distinct creep regimes of methane hydrates predicted by a monatomic water model |
| url | http://doi.org/10.1103/PhysRevResearch.7.L012007 |
| work_keys_str_mv | AT henrikandersensveinsson distinctcreepregimesofmethanehydratespredictedbyamonatomicwatermodel AT pinqiangcao distinctcreepregimesofmethanehydratespredictedbyamonatomicwatermodel |