2009 Fiscal Year Final Research Report
Modeling of dynamics of crack in crystals by nonlinear energy localization
| Project/Area Number |
20760057
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Engineering fundamentals
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| Research Institution | Osaka University |
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Principal Investigator |
DOI Yusuke Osaka University, 工学研究科, 助教 (10403172)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 非線形格子力学 / 分子動力学 / 離散ブリーザー / 非線形局在モードグラフェンシート |
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| Research Abstract |
We investigate structure and dynamics of nonlinear localized vibration (intrinsic localized mode, ILM) in crystal structure due to the nonlinear interaction potential between atoms. We consider ILM in graphene sheet which is two dimensional structure of carbon atoms. By combining molecular dynamics method and Newton-Raphson method, we search localized vibration in graphene sheet and investigate its structure. We also investigate stability of localized structure. These results imply possibility that ILM can be trigger of change of structure in atomic scale in crystal such as cutting and recombination of carbon-carbon bonds.
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