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| Experimental Study on Equivalent Simplification of Buffeting Load Spectrum |
| Received:July 09, 2020 Revised:July 19, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.09.021 |
| KeyWord:buffeting equivalent of dynamic load fatigue |
| Author | Institution |
| SHI Yuan-hua |
Chengdu Aircraft Design & Research Institute, Chengdu , China |
| WANG Yong-jun |
Chengdu Aircraft Design & Research Institute, Chengdu , China |
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| Abstract: |
| The paper aims to test and verify the equivalent method of buffeting fatigue load spectrum. The calculation formula of equivalent conventional fatigue response stress was given from the probability density function of buffeting response stress. Simulated buffeting test and fixed frequency cantilever bending fatigue test were carried out. The control parameters of the latter need to be set and adjusted according to the calculated equivalent stress. Finally, the consistency of the specimens fatigue life between the two tests was compared. An effective test method was formed. The experimental results were in good agreement with the theoretical calculation. Furthermore, according to the experimental phenomena, the improvement scheme was proposed. The equivalent method is effective. |
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