THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION
The size effects on the mechanical properties and defect evolution process of single crystal aluminum with a center crack under tensile loading have been simulated through molecular dynamic method. With the increase of model size, the yield stress and yield point decreased, while the fracture toughn...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2019-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.013 |
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| _version_ | 1841535633888116736 |
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| author | WANG LuSheng DING Jun SONG Kun LIU Bo HUANG Xia |
| author_facet | WANG LuSheng DING Jun SONG Kun LIU Bo HUANG Xia |
| author_sort | WANG LuSheng |
| collection | DOAJ |
| description | The size effects on the mechanical properties and defect evolution process of single crystal aluminum with a center crack under tensile loading have been simulated through molecular dynamic method. With the increase of model size, the yield stress and yield point decreased, while the fracture toughness increased. In the elastic stage, the deformation relies heavily on the point defects and surface defects in materials, while in plastic stage it depends strongly on the dislocation multiplication and its slip. The stress concentration at the crack tip is mainly associated with the phase transformation of the crystal structure near the crack tip due to the stress relaxation after phase transformation. |
| format | Article |
| id | doaj-art-80c300b67b81400cafd7190750a601ad |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-80c300b67b81400cafd7190750a601ad2025-01-15T02:30:26ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692019-01-014133333930604553THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATIONWANG LuShengDING JunSONG KunLIU BoHUANG XiaThe size effects on the mechanical properties and defect evolution process of single crystal aluminum with a center crack under tensile loading have been simulated through molecular dynamic method. With the increase of model size, the yield stress and yield point decreased, while the fracture toughness increased. In the elastic stage, the deformation relies heavily on the point defects and surface defects in materials, while in plastic stage it depends strongly on the dislocation multiplication and its slip. The stress concentration at the crack tip is mainly associated with the phase transformation of the crystal structure near the crack tip due to the stress relaxation after phase transformation.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.013Molecular dynamicsSize effectMechanical propertyDefects evolution |
| spellingShingle | WANG LuSheng DING Jun SONG Kun LIU Bo HUANG Xia THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION Jixie qiangdu Molecular dynamics Size effect Mechanical property Defects evolution |
| title | THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION |
| title_full | THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION |
| title_fullStr | THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION |
| title_full_unstemmed | THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION |
| title_short | THE STUDY OF SIZE EFFECTS ON MECHANICAL PROPERTIES AND DEFECTS EVOLUTION IN NANO ALUMINUM BASED ON MOLECULAR DYNAMICS SIMULATION |
| title_sort | study of size effects on mechanical properties and defects evolution in nano aluminum based on molecular dynamics simulation |
| topic | Molecular dynamics Size effect Mechanical property Defects evolution |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.013 |
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