Study on Evaluation of Compressive Strength of GFRP Stiffened Panel with Top-Hat Stiffener
| Project/Area Number |
22560793
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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 |
Naval and maritime engineering
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| Research Institution | Ehime University |
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Principal Investigator |
YANAGIHARA Daisuke 愛媛大学, 大学院・理工学研究科, 寄附講座准教授 (10294539)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 複合材料 / FRP / 座屈 / 層間はく離 / ハット型スチフナ / 防撓パネル / GFRPパネル / ハット型防撓材 / 有限要素法解析 |
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| Research Abstract |
Based on the results obtained by buckling tests for a GFRP unstiffened panel and stiffened panels with a top-hat stiffener, the fundamental buckling/fracture behavior including initiation of delamination is identified. Compressive stress in BWR layers is considered as one of the causes of the delamination, and the critical stress is derived by compressive material tests. To obtain a criterion for delamination produced in the curved part of the top-hat stiffener, four-pointed bending tests for curved band plates are carried out. Based on the through-thickness stress produced in the curved plate, the critical bending moment is derived. Through the validation of the critical values, the possibility to predict the initiation of the delamination is indicated.
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Report
(4 results)
Research Products
(4 results)
