2010 Fiscal Year Final Research Report
Establishment of Design Procedure for Safe Joint and Its Risk Analysis Method by Computational Mechanics
| Project/Area Number |
20560132
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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 |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Kobe University |
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Principal Investigator |
FUKUOKA Toshimichi Kobe University, 大学院・海事科学研究科, 教授 (00116279)
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| Co-Investigator(Kenkyū-buntansha) |
NOMURA Masataka 神戸大学, 大学院・海事科学研究科, 准教授 (70252608)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 機械要素 / ねじ / 有限要素法 / 接触熱抵抗 / 接触面剛性 |
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| Research Abstract |
It is quantitatively clarified by FE models with helical thread geometry how fatigue failures occur in bolted joints. Driving an empirical equation for estimating thermal contact resistance composed of dissimilar materials, thermal and mechanical behaviors of bolted joints are comprehensively studied. As for vibration problems of bolted joints, a numerical procedure is proposed to evaluate its natural frequencies by taking account of interface stiffness. Fundamental characteristics of multi-bolted joints, such as bolt preload scatter and shear load capacity when subjected to shearing force, are quantitatively examined.
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