Anisotropic shock responses of nanoporous Al by molecular dynamics simulations.
Mechanical responses of nanoporous aluminum samples under shock in different crystallographic orientations (<100>, <111>, <110>, <112> and <130>) are investigated by molecular dynamics simulations. The shape evolution of void during collapse is found to have no relation...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2021-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0247172 |
| _version_ | 1819037996204163072 |
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| author | Xia Tian Kaipeng Ma Guangyu Ji Junzhi Cui Yi Liao Meizhen Xiang |
| author_facet | Xia Tian Kaipeng Ma Guangyu Ji Junzhi Cui Yi Liao Meizhen Xiang |
| author_sort | Xia Tian |
| collection | DOAJ |
| description | Mechanical responses of nanoporous aluminum samples under shock in different crystallographic orientations (<100>, <111>, <110>, <112> and <130>) are investigated by molecular dynamics simulations. The shape evolution of void during collapse is found to have no relationship with the shock orientation. Void collapse rate and dislocation activities at the void surface are found to strongly dependent on the shock orientation. For a relatively weaker shock, void collapses fastest when shocked along the <100> orientation; while for a relatively stronger shock, void collapses fastest in the <110> orientation. The dislocation nucleation position is strongly depended on the impacting crystallographic orientation. A theory based on resolved shear stress is used to explain which slip planes the earliest-appearing dislocations prefer to nucleate on under different shock orientations. |
| first_indexed | 2024-12-21T08:30:17Z |
| format | Article |
| id | doaj.art-f4b4b62d0f134e8580f2f2cb6a14db7c |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-21T08:30:17Z |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-f4b4b62d0f134e8580f2f2cb6a14db7c2022-12-21T19:10:13ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01163e024717210.1371/journal.pone.0247172Anisotropic shock responses of nanoporous Al by molecular dynamics simulations.Xia TianKaipeng MaGuangyu JiJunzhi CuiYi LiaoMeizhen XiangMechanical responses of nanoporous aluminum samples under shock in different crystallographic orientations (<100>, <111>, <110>, <112> and <130>) are investigated by molecular dynamics simulations. The shape evolution of void during collapse is found to have no relationship with the shock orientation. Void collapse rate and dislocation activities at the void surface are found to strongly dependent on the shock orientation. For a relatively weaker shock, void collapses fastest when shocked along the <100> orientation; while for a relatively stronger shock, void collapses fastest in the <110> orientation. The dislocation nucleation position is strongly depended on the impacting crystallographic orientation. A theory based on resolved shear stress is used to explain which slip planes the earliest-appearing dislocations prefer to nucleate on under different shock orientations.https://doi.org/10.1371/journal.pone.0247172 |
| spellingShingle | Xia Tian Kaipeng Ma Guangyu Ji Junzhi Cui Yi Liao Meizhen Xiang Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. PLoS ONE |
| title | Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. |
| title_full | Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. |
| title_fullStr | Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. |
| title_full_unstemmed | Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. |
| title_short | Anisotropic shock responses of nanoporous Al by molecular dynamics simulations. |
| title_sort | anisotropic shock responses of nanoporous al by molecular dynamics simulations |
| url | https://doi.org/10.1371/journal.pone.0247172 |
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