2013 Fiscal Year Final Research Report
A Study on Inverse Calculation of Impact Load and Structural Response Based on the measured Strain
| Project/Area Number |
23656551
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
YOSHIKAWA Takao 九州大学, 工学(系)研究科(研究院), 教授 (50380572)
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Masahiro 九州大学, 大学院・工学研究院, 助教 (70173713)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 逆解析 / 構造応答 / ひずみ計測 / 外力評価 / 衝撃荷重 |
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| Research Abstract |
In this study, the procedure of inverse calculation method, which can estimate the peak load, time duration, impulse, and location of impact load from measured time history of strains, was developed.
And, the method for estimating the time history of strains at the points other than measured points was developed using the natural frequencies of the structure, the mode amplitude and phase angle of measured strain, and the natural modes for the initial planning structure, which were estimated from the measured strain history.
The developed inverse calculation technique of impact load was verified using the impact test results for both clamped beam specimen and the stiffened panel specimen.
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