| 气动加热环境下大攻角翼面超音速颤振分析 |
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| 引用本文： | 史晓鸣,杨炳渊.气动加热环境下大攻角翼面超音速颤振分析[J].强度与环境,2008,35(6). |
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| 作者姓名： | 史晓鸣 杨炳渊 |
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| 作者单位： | 上海航天技术研究院第八设计部,上海,200233 |
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| 摘 要： | 研究大攻角翼面超音速热颤振的分析方法,内容包括气动加热、温度场、热应力和热模态分析,大攻角翼面非定常气动力计算和热颤振分析。提供了一套从流场分析开始到颤振临界参数搜索的一体化热颤振工程分析方法。气动力方面,应用激波膨胀波理论计算大攻角翼面的当地流场参数;应用参考焓方法计算大攻角翼面气动加热的热流密度;以当地流活塞理论计算翼面超音速非定常气动力。结构方面,利用有限元方法进行翼面瞬态温度场和热模态分析,然后用模态叠加法建立颤振运动方程;应用状态空间法和时域递推积分的方法求解颤振运动方程。工程实例的热颤振分析表明,在Ma〉3的高马赫数下热颤振临界动压比常温的颤振临界动压明显下降,高马赫数下翼面的热颤振分析在工程设计中值得重视。
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| 关 键 词： | 气动热弹性 超音速 大攻角 温度场 模态 颤振 |
Analysis of supersonic flutter of the wing with high angle of attack with aerodynamics heating |
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| SHI Xiao-ming,YANG Bing-yuan.Analysis of supersonic flutter of the wing with high angle of attack with aerodynamics heating[J].Structure & Environment Engineering,2008,35(6). |
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| Authors: | SHI Xiao-ming YANG Bing-yuan |
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| Institution: | SHI Xiao-ming YANG Bing-yuan(The 8th Institute,Shanghai Academy of Spaceflight technology,Shanghai 200233,China) |
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| Abstract: | The research about the analysis approach of thermo-flutter of supersonic wing with high angle of attack is presented,including the introduction of mathematical model and solution procedure of thermo-flutter,and the calculation and analysis of aerodynamics heating,temperature field,thermal stress and thermo-mode as the input of thermo-flutter analysis and design.Therefore,the integrated engineering analysis method of thermo-flutter which begins with analysis of flow field and ends by searching of flutter cri... |
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| Keywords: | aerothermoelasticity supersonics high angle of attack temperature field mode flutter |
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