2013 Fiscal Year Final Research Report
Mechanical characteristics of the bolted joint in the ultra-lightweight hybrid structure for sustainable society
| Project/Area Number |
23760522
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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 |
Building structures/materials
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
MATSUMOTO YUKIHIRO 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (00435447)
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| Project Period (FY) |
2011 – 2013
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| Keywords | ＦＲＰ / ハイブリッド構造 / 空間骨組構造 |
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| Research Abstract |
This study aims to make clear the mechanical characteristics of the bolted joint in the ultra-lightweight hybrid structure by using FRP member for sustainable structures. In this research, the variation of the bolt tension was discussed through one-month monitoring for the strains of FRP members. Also, the non-linear failure behavior of bolted frictional joints in various bolt tension was experimentally made clear. Then, the large deflection behavior, the effects of the relaxation of bolt tension and the associated frictional coefficients were discussed in detail. It was finally suggested that the FRP frictional coefficient of the bolted joints is equal to or higher than 0.45 even the occurrence of the relaxation of bolt tension. Furthermore, the FEA simulations were carried out and it was confirmed that the FEA results are corresponding to the experimental results.
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