| 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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| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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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 / 分子動力学法 / 格子欠陥 / 局所格子不安定性 / 弾性剛性係数 |
|---|
| 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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