2005 Fiscal Year Final Research Report Summary
Studies of Rheology and Deformation Mechanism of Amorphous materials
| Project/Area Number |
15607012
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
計算科学
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| Research Institution | Kyoto University |
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Principal Investigator |
ONUKI Akira Kyoto University, Dep. Of Physics, Professor, 大学院・理学研究科, 教授 (90112284)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Ryoichi Kyoto University, Dep. Of Chemical Engineering, Associate Professor, 大学院・工学研究科, 助教授 (10263401)
KITAMURA Hikaru Kyoto University, Dep. Of Physics, Research Associate, 大学院・理学研究科, 助手 (60335297)
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| Project Period (FY) |
2003 – 2005
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| Keywords | glass / plastic deformation / lattice imperfection / structural relaxation / poly crystal |
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| Research Abstract |
We have constructed a nonlinear elasticity theory in which the elastic energy is a periodic function of the strains. We can then describe plastic deformations of solids with a high dislocation density. We regard glasses as solids containing high density defects and claim that diffusion of the free volume relaxation in disordered environment gives rise to slow glassy relaxations. We have numerically demonstrated this mechanism by constructing a Ginzburg-Landau theory. We have also applied shear deformations to solids in two phase states to find dislocation formation and rheology in two phase states.
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