| Project/Area Number |
24560262
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | University of Miyazaki (2013-2014)
Kyushu University (2012) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KONDOU Takahiro 九州大学, 工学研究院, 教授 (80136522)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 非線形振動 / 自励振動 / 自己同期現象 / 振動制御 / 建設機械 / 衝突振動 / シューティング法 / 安定判別 |
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| Outline of Final Research Achievements |
The purpose of this study is to develop a very low-vibrational tool using self-synchronization phenomena in order to decrease the risk of the hand-arm vibration syndrome. Firstly, the prototype experimental apparatus with a generation mechanism of synchronous vibration suitable for a tamping rammer was developed based on the mechanism of the impact model with four oscillators. The availability of the synchronous vibration generated in the prototype experimental apparatus was investigated based on sand compaction tests and numerical computations. In addition, the experiment for measuring the daily vibration exposure values and the compaction forces was conducted to estimate the performance of a vibration control and a compaction.
Secondly, an elementally model with a generation mechanism of synchronous vibration suitable for a electric drill was developed, and the effectiveness of the present model was confirmed by comparing the experimental and numerical computational results.
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