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| 结合CFD和当地流活塞理论的全机组合体超声速颤振分析 | |
| 引用本文： | 史晓鸣,杨炳渊,李海东,唐国安.结合CFD和当地流活塞理论的全机组合体超声速颤振分析[J].应用力学学报,2011,28(6). |
| 作者姓名： | 史晓鸣 杨炳渊 李海东 唐国安 |
| 作者单位： | 1. 复旦大学,上海200433／上海航天技术研究院第八设计部,上海200233 2. 上海航天技术研究院第八设计部,上海,200233 3. 复旦大学,上海,200433 |
| 基金项目： | 国家自然科学基金(90716001); 总装“十一五”航天支撑技术项目基金(617010602) |
| 摘 要： | 针对翼．身组合体飞行器面对称布局的特点，利用模态振型的对称和反对称性，以分枝模态法建立结构的运动微分方程，结合CFD的当地流活塞理论计算飞行器的非定常气动力，建立飞行器全机组合体的气动弹性数学模型。对飞行器进行了来流为1．5～7马赫数下的颤振分析，结果与全CFD／CSD耦合时域仿真结果较好吻合，验证了本文方法在工程设计中的有效性和可行性。本文方法的效率在相同精度下比CFD／CSD耦合的时域方法高100倍。 |
| 关 键 词： | 气动弹性 颤振 翼-身组合体 全机 当地流活塞理论 |
Flutter analysis of Wing-fuselage complete vehicle |
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| Shi Xiaoming, Yang Bingyuan Li Haidong Tang Guo'an.Flutter analysis of Wing-fuselage complete vehicle[J].Chinese Journal of Applied Mechanics,2011,28(6). | |
| Authors: | Shi Xiaoming Yang Bingyuan Li Haidong Tang Guo'an |
| Institution: | Shi Xiaoming1,2 Yang Bingyuan2 Li Haidong2 Tang Guo'an1(Department of Mechanics and Engineering Science,Fudan University,200433,Shanghai,China) 1(The 8th Institute of Shanghai Academy of Spaceflight Technology,200233,China) 2 |
| Abstract: | To establish the aero-elastic model of wing-fuselage vehicle,the structural dynamic model is founded by branch mode method,which depends on the symmetrical and antisymmetrical mode shape.Unsteady aerodynamic force of vehicle is calculated by the local piston theory based on CFD.The flutter boundary of Ma equals to 1.5~7 results by CFD-based local piston theory agree well with those by the CFD/CSD direct coupling method.The results obtained demonstrate that the approach developed is suitable for the flutter ... |
| Keywords: | aero-elasticity flutter wing-fuselage complete vehicle local piston theory |
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