2015 Fiscal Year Final Research Report
Evaluation of buckling property in defective multi-walled carbon nanotubes using local instability analysis
| Project/Area Number |
26820006
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | カーボンナノチューブ / 分子動力学 / 座屈 / 局所不安定 / 圧縮 / 曲げ |
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| Outline of Final Research Achievements |
We have performed compression and bending simulation on defective multi-walled CNTs using molecular dynamics method, and discussed buckling properties of CNTs. In order to discuss relationships between buckling behavior and local deformation resistance, we have also evaluated atomic elastic stiffness corresponding with the second-order derivatives of atomic energy. As a result, second smallest eigenvalue of atomic elastic stiffness in some atoms changes to negative before buckling behavior. This suggests that we can predict the onset of local buckling by the same criterion in different CNT models.
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| Free Research Field |
計算固体力学
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