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| THE INVESTIGATION FOR ACOUSTIC FATIGUE ONCOMPOSITE SOLAR PANEL |
| Received:September 01, 2016 Revised:September 19, 2016 |
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| DOI：10.7643/ issn.1672-9242.2016.05.007 |
| KeyWord:acoustic excitation, EF/BEM, acoustic response, fatigue life |
| Author | Institution |
| 郑玲 |
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| 张巍 |
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| 曾杰 |
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| 向树红 |
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| 李晔 |
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| 杨江 |
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| Abstract: |
| In the launch process, the spacecraft has been subjected to huge sound excitation. The investigation on the fatigue behavior and its evolution law of spacecrafts under sound excitation is very significant to ensure the safety of the spacecraft in the launch. In this paper, the acoustic fatigue of composite solar panel is analyzed and investigated. Finite Element (FE) and Boundary Element(BE) methods are used to establish numerical analysis models for acoustic response in composite solar panel. The numerical analysis model is verified and validated by acoustic test of the solar panel in reverberation chamber. Furthermore, the fatigue life of composite solar panel under acoustic excitation is calculated and predicted. The results show that the center location in composite solar panel has the shortest fatigue life due to high stress level caused by several vibro-acoustic coupling modes. This research provides an analysis and prediction method to acoustic fatigue life of some key components in spacecraft such as satellites, solar panel and others. |
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