| 基于混合FE-SEA法的高温环境飞行器宽频声振特性分析 |
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| 引用本文： | 杨雄伟,李跃明,耿谦. 基于混合FE-SEA法的高温环境飞行器宽频声振特性分析[J]. 航空学报, 2011, 32(10): 1851-1859. DOI: 11-1929/V.20110511.1351.004 |
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| 作者姓名： | 杨雄伟 李跃明 耿谦 |
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| 作者单位： | 西安交通大学航天航空学院机械结构强度与振动国家重点实验室,陕西西安,710049 |
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| 基金项目： | 国家自然科学基金(91016008)~~ |
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| 摘 要： | 针对高超声速飞行器在服役中的高温和高声强环境,分别从高温引起的结构附加热应力和材料物性改变出发,以X-43A为研究对象,使用混合有限元—统计能量分析(FE-SEA)法对其在高温环境、165 dB声压作用下的声振特性进行数值分析.建立由结构FE模型和内声场SEA模型构成的混合声振系统,得到1800 Hz宽频范围内结构表面...
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| 关 键 词： | 声振特性 混合FE-SEA 宽频 热应力 材料物性 |
| 收稿时间： | 2010-12-23; |
Broadband Vibro-acoustic Response of Aircraft in High Temperature Environment Based on Hybrid FE-SEA |
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| YANG Xiongwei,LI Yueming,GENG Qian. Broadband Vibro-acoustic Response of Aircraft in High Temperature Environment Based on Hybrid FE-SEA[J]. Acta Aeronautica et Astronautica Sinica, 2011, 32(10): 1851-1859. DOI: 11-1929/V.20110511.1351.004 |
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| Authors: | YANG Xiongwei LI Yueming GENG Qian |
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| Affiliation: | YANG Xiongwei,LI Yueming,GENG Qian State Key Laboratory for Strength and Vibration of Mechanical Structure,School of Aerospace,Xi'an Jiaotong University,Xi'an 710049,China |
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| Abstract: | This paper presents a numerical study which investigates the effect of high temperature on the dynamic response of a vibro-acoustic system excited by 165 dB acoustic pressure based on a hybrid finite element-statistical energy analysis(FE-SEA) in 1 800 Hz broadband frequency.The study takes into consideration the thermal stress and temperature-dependent material properties mainly through which the thermal environment influences the dynamic response.The coupled system is composed of an FE model of X-43A and ... |
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| Keywords: | vibro-acoustic response hybrid FE-SEA broadband thermal stress material property |
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