| 研究領域 | ミルフィーユ構造の材料科学-新強化原理に基づく次世代構造材料の創製- |
|---|
| 研究課題/領域番号 |
21H00102
|
|---|
| 研究種目 |
新学術領域研究(研究領域提案型)
|
| 配分区分 | 補助金 |
|---|
| 審査区分 |
理工系
|
|---|
| 研究機関 | 九州大学 |
|---|
研究代表者 |
Cesana Pierluigi 九州大学, マス・フォア・インダストリ研究所, 准教授 (60771532)
|
|---|
| 研究期間 (年度) |
2021-04-01 – 2023-03-31
|
| 研究課題ステータス |
完了 (2022年度)
|
| 配分額 *注記 |
4,550千円 (直接経費: 3,500千円、間接経費: 1,050千円)
2022年度: 2,340千円 (直接経費: 1,800千円、間接経費: 540千円)
2021年度: 2,210千円 (直接経費: 1,700千円、間接経費: 510千円)
|
|---|
| キーワード | disclination / kink formation / calculus of variations / solid mechanics / Disclinations / Kink formation / Calculus of Variations / Solid Mechanics / Plasticity |
|---|
| 研究開始時の研究の概要 |
To understand the interplay of micro-scale defects (such as disclinations and dislocations) and macro-scale phenomena (such as strain-bands and kinks) in metals with mille-feuille structures. Ultimately, to understand the interplay of disclinations and kinks on materials strengthening.
|
| 研究実績の概要 |
FY22. Completed the micro-scale modeling of finite systems of disclination and dislocations, including disclination dipoles, which are proxy for kinks. Clarified the influence of geometrical parameters of the system on energy scalings. Computed effective energies with Gamma-convergence (1 paper published).
Developed computer programs and run simulations for tensile tests of metals in various crystal symmetries. Clarified qualitatively (in terms of phase diagrams) and quantitatively (in terms of bifurcation parameters) the dependence of kink morphologies on the symmetry of the lattice (square vs. hexagonal) and of the domain aspect ratio (1 paper in preparation). Additionally, developed a numerical platform blending Density Functional Theory, Machine Learning and Genetic Algorithms to optimize the topological and geometrical properties of functional molecules (1 paper published). This platform can find an application in the design of better materials (including metal alloys) for specific applications by tailoring the pattern of lattice defects.
|
| 現在までの達成度 (段落) |
令和4年度が最終年度であるため、記入しない。
|
| 今後の研究の推進方策 |
令和4年度が最終年度であるため、記入しない。
|
