Development of numerical method for flying debris in wind and evaluation of impact forces
| Project/Area Number |
15K14024
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
HASEBE Hiroshi 日本大学, 理工学部, 准教授 (60366565)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 風災害 / 飛来物 / 衝撃力 / 構造流体連成解析 / 有限要素法 / 風洞実験 / 圧電型ロードセル / 3Dプリンタ / 有限要素報 / 3D プリンタ |
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| Outline of Final Research Achievements |
In order to analyze flight of flying debris which expands damage area in wind-induced disasters, we have tried to develop a new computational method which can analyze flying motion of object with arbitrary shape and load balance flies with dynamically changing fluid forces and can evaluate impact forces. We have developed three key numerical procedures: (1) Dynamically moving and tilting computational mesh which flies with the flying object; (2) A smooth time history of impact force over a set of multiple short time steps; (3) Sliding interface method over nonconforming meshes. Each of these method has been checked and revealed that adequate solutions can be obtained. In addition, a wind tunnel experiment has been conducted in which impact force of flying object falling on an aluminum plate can be measured by piezoelectric type load cells. The experimented flying objects were made by a 3D printer.
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Report
(4 results)
Research Products
(24 results)
