2022 Fiscal Year Annual Research Report
Understanding strengthening in mille-feuille structures via mesoscale modeling of structural and material instabilities
Publicly Offered Research
| Project Area | Materials science on mille-feullie structure -Developement of next-generation structural materials guided by a new strengthen principle- |
|---|
| Project/Area Number |
21H00102
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
Cesana Pierluigi 九州大学, マス・フォア・インダストリ研究所, 准教授 (60771532)
|
|---|
| Project Period (FY) |
2021-04-01 – 2023-03-31
|
| Keywords | disclination / kink formation / calculus of variations / solid mechanics |
|---|
| Outline of Annual Research Achievements |
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.
|
| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
|
| Strategy for Future Research Activity |
令和4年度が最終年度であるため、記入しない。
|
