| Project/Area Number |
18K04582
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 24020:Marine engineering-related
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| Research Institution | Hiroshima University |
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Principal Investigator |
Tanaka Satoyuki 広島大学, 先進理工系科学研究科(工), 准教授 (20452609)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | Peridynamics / 破壊力学 / 脆性材料 / メッシュフリー/粒子法 / 有限要素法 / 動的破壊 / メッシュフリー法/粒子法 / 動的応力拡大係数 / Fracture Mechanics / Meshfree Method / Dynamic Problem |
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| Outline of Final Research Achievements |
When operating transportation vehicles and welded structures, there are possibility to generate fracture and damage in the structures. Under further mechanical loading, the fracture and damage will be developed. Fracture mechanics; it is one of the evaluation techniques for the fracture behaviors from material and mechanics aspects. In evaluating the cracked structures, numerical simulation is one of the methods. Accurate numerical modeling is required for the simulation, however, there are difficulties to accurately model the cracked structure or the fracture behaviors. In the present study, Peridynamics is studied as a new method to analyze cracked structures. Accurate fracture evaluation using Peridynamics is studied.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究を通して，Peridynamics を用いて動的き裂進展現象の評価およびその高精度化を行うことができた．これまで構造解析で用いられてきた有限要素法と比較して，き裂を含む構造のモデル化の自由度が高く，かつ，既存の結果と比較しても遜色ない動的き裂進展挙動を行える数値解析法を構築することができた．
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