| 超音速二元翼极限环颤振的高次线化分析 |
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| 引用本文： | 陈香,杨志军,范志强,杨翊仁.超音速二元翼极限环颤振的高次线化分析[J].科学技术与工程,2009,9(1). |
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| 作者姓名： | 陈香 杨志军 范志强 杨翊仁 |
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| 作者单位： | 中国燃气涡轮研究院,江油,621703;西南交通大学应用力学与工程系,成都,610031 |
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| 摘 要： | 以一个在俯仰方向带有初偏间隙非线性刚度的超音速二元机翼为模型,研究非线性气动弹性系统的双稳定极限环颤振问题.在利用二阶活塞理论计算非定常气动力和力矩的基础上,采用KBM法一次渐近解的等效线化分析方法对系统的颤振进行了定性分析,最后通过数值模拟验证了理论分析的正确性.
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| 关 键 词： | 超音速 非线性 颤振 极限环 |
High Order Lineariztion Analyse of Limit Cycle Flutter of a Supersonic Dualistic Airfoil |
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| CHEN Xiang,YANG Zhi-jun,FAN Zhi-qiang,YANG Yi-ren.High Order Lineariztion Analyse of Limit Cycle Flutter of a Supersonic Dualistic Airfoil[J].Science Technology and Engineering,2009,9(1). |
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| Authors: | CHEN Xiang YANG Zhi-jun FAN Zhi-qiang YANG Yi-ren |
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| Institution: | Gas Turbine Establishment;Jiangyou 621703;P.R.China;Dept of Appl.Mechanics and Eng.;Southwest Jiaotong University1;Chendu 610031;P.R.China |
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| Abstract: | A dualistic airfoil with feel play nonlinear stiffness in pitch in the supersonic flow is considered.The double state limit cycle flutter of which is investigated.Using the expression of unsteady aerodynamic and moment by the piston theory in the second-order approximation,the equivalent linearization method based on the first-order asymptotic solution of the KBM method is introduced into the qualitative analysis of flutter of the nonlinear aeroelastic system,and numerical simulation validate correctness of... |
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| Keywords: | supersonic non-linearity flutter limit cycle |
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