2011 Fiscal Year Final Research Report
A Study on Explosively Driven Fracture Mechanism and Function Sustainable Structures for Machine Structural Components
| Project/Area Number |
20560079
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Kumamoto University |
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Principal Investigator |
HIROE Tetsuyuki 熊本大学, 大学院・自然科学研究科, 教授 (90218826)
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| Co-Investigator(Renkei-kenkyūsha) |
FUJIWARA Kazuhito 熊本大学, 大学院・自然科学研究科, 教授 (50219060)
HATA Hidehiro 熊本大学, 大学院・自然科学研究科, 助教 (30381007)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 破壊 |
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| Research Abstract |
Explosive loads are applied to uniformly expand symmetrical structural components s : tubular cylinders, spherical shells and rings of a steel and light alloys to fragmentation and transfer planar shock waves into plates to spallation with unique explosive initiation techniques, and in addition damage reduction measures : wall doubling of cylinders and notch machining effects on the free surfaces of the plates are evaluated experimentally and numerically. As the results, applicability of a fragmentation model and a penetration model to the fracture of components and the shatterproof of wall doubling cylinders are confirmed, and a spall damage evaluation chart are suggested for damage reduction of plates.
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