| Project/Area Number |
23K13241
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 18030:Design engineering-related
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| Research Institution | Kyoto University |
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Principal Investigator |
林 聖勳 京都大学, 工学研究科, 講師 (30820724)
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| Project Period (FY) |
2023-04-01 – 2026-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2025: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2024: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | homogenization method / magnetic nonlinearity / ferromagnetic material / magnetic system / Multi-scale optimization / Topology optimization / Microstructure / Magnetic nonlinearity / Homogenization method |
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| Outline of Research at the Start |
All process for topology optimization considering nonlinear magnetic properties and microstructures, such as setting of design variables in both micro- and macro-scale, calculation of material properties, formulation of multi-scale optimization problem, and optimization algorithm, will be mentioned.
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| Outline of Annual Research Achievements |
The purpose of this research is to develop a homogenization method that can accurately predict the properties of the microstructure of ferromagnets considering magnetic nonlinearity and apply it to the optimal design for improving the performance of the magnetic system. This year's research focused on optimizing the effective microstructure shape to maximize the magnetic anisotropy of ferromagnets and defining the nonlinear magnetic characteristic function using the surrogate model. In addition, it was confirmed that the microstructure shape had a great influence on the improvement of the actuator performance by applying the homogeneous properties of the microstructure to the design of a magnetic actuator with a simple shape.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
By carrying out more case studies and benchmarking design issues than the original plan, the research schedule presented in the proposal was carried out without difficulty and to increase the accuracy of the self-linear homogenization method to be proposed. It was not possible to publish many journal papers because it was the first year of the study, but related research results have been presented at one or more international conferences, and if the research goes smoothly as it is now, it is expected that meaningful thesis results will be obtained from the second year.
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| Strategy for Future Research Activity |
So far, I have mainly looked at what magnetic properties the microstructures of ferromagnets have and how the microstructures affect the performance improvement of magnetic systems. As a result, it was confirmed that the development of a homogenization method considering magnetic nonlinearity is a very valuable research topic and will be of great help in designing magnetic systems in the future. However, there is still a limitation in that the properties of microstructures must be calculated with an approximate function using the surrogate model. Therefore, I plan to focus our research on whether it is possible to define a mathematical function for magnetic nonlinear homogenization in the future.
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