| Project/Area Number |
25870013
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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 |
Earth system and resources engineering
Geotechnical engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
FUKUDA Daisuke 北海道大学, 工学(系)研究科(研究院), 助教 (80647181)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 岩質材料 / 複雑亀裂進展 / 高速破砕 / 3次元破壊プロセス解析 / DFPA / 有限要素法(FEM) / 動的破壊力学 / 数値破壊プロセス解析 / 3次元有限要素法 / 数値破壊解析 / 亀裂進展 / 高速破砕制御 / 発破 / 接触処理 / 高速制御破砕 / 3次元リメッシュ / X線CT |
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| Outline of Final Research Achievements |
In this research, a state-of-the-art "3-D Dynamic Fracture Process Analysis (DFPA)" code was developed based on the finite element method. By utilizing the inter-element cracking method and cohesive fracture model, the 3-D DFPA can simulate the complex initiation, growth, branching and coalescence of multiple cracks with the consideration of rock heterogeneity. The 3-D DFPA can be applied to various dynamic fracturing problems for rock-like materials. Therefore, the outcome of this research, i.e. the developed 3-D DFPA code, can contribute to the understanding of the mechanisms of dynamic fracturing in rock-like materials, which have not been understood well. In addition, since the 3-D DFPA can realistically simulate the fracturing process contrary to the previous researches using pure continuum mechanics-based approach, it can be used for finding the optimum design of the various fast breaking methods which apply rapid loading to the rock-like materials.
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